Finding the Fourth Proportional to 1,036,385,665.18, 1,554,578,497.76 and 1,036,385,665.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036,385,665.18 : 1,554,578,497.76 = 1,036,385,665.18 : x
2. Step 2: Convert to fraction form
   1,036,385,665.18/1,554,578,497.76 = 1,036,385,665.18/x
3. Step 3: Cross multiply
   1,036,385,665.18x = 1,554,578,497.76 × 1,036,385,665.18
4. Step 4: Simplify right side
   1,036,385,665.18x = 1,611,142,870,475,522,560
5. Step 5: Solve for x
   x = 1,611,142,870,475,522,560/1,036,385,665.18
6. Step 6: Final answer
   x = 1,554,578,497.76