Finding the Fourth Proportional to 1,012,380.63, 1,397,114.42 and 559,700.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,380.63 : 1,397,114.42 = 559,700.79 : x
2. Step 2: Convert to fraction form
   1,012,380.63/1,397,114.42 = 559,700.79/x
3. Step 3: Cross multiply
   1,012,380.63x = 1,397,114.42 × 559,700.79
4. Step 4: Simplify right side
   1,012,380.63x = 781,966,044,594.39
5. Step 5: Solve for x
   x = 781,966,044,594.39/1,012,380.63
6. Step 6: Final answer
   x = 772,403.21