Finding the Fourth Proportional to 1,012,476.72, 1,397,218.64 and 553,583.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,476.72 : 1,397,218.64 = 553,583.98 : x
2. Step 2: Convert to fraction form
   1,012,476.72/1,397,218.64 = 553,583.98/x
3. Step 3: Cross multiply
   1,012,476.72x = 1,397,218.64 × 553,583.98
4. Step 4: Simplify right side
   1,012,476.72x = 773,477,855,661.39
5. Step 5: Solve for x
   x = 773,477,855,661.39/1,012,476.72
6. Step 6: Final answer
   x = 763,946.31