Finding the Fourth Proportional to 1,152,442.46, 1,590,328.88 and 636,185.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,442.46 : 1,590,328.88 = 636,185.28 : x
2. Step 2: Convert to fraction form
   1,152,442.46/1,590,328.88 = 636,185.28/x
3. Step 3: Cross multiply
   1,152,442.46x = 1,590,328.88 × 636,185.28
4. Step 4: Simplify right side
   1,152,442.46x = 1,011,743,823,814.89
5. Step 5: Solve for x
   x = 1,011,743,823,814.89/1,152,442.46
6. Step 6: Final answer
   x = 877,912.66