Finding the Fourth Proportional to 1,012,503.50, 1,397,275.05 and 553,646.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,503.50 : 1,397,275.05 = 553,646.79 : x
2. Step 2: Convert to fraction form
   1,012,503.50/1,397,275.05 = 553,646.79/x
3. Step 3: Cross multiply
   1,012,503.50x = 1,397,275.05 × 553,646.79
4. Step 4: Simplify right side
   1,012,503.50x = 773,596,846,179.59
5. Step 5: Solve for x
   x = 773,596,846,179.59/1,012,503.50
6. Step 6: Final answer
   x = 764,043.63