Finding the Fourth Proportional to 1,013,908.60, 1,399,047.42 and 561,198.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013,908.60 : 1,399,047.42 = 561,198.52 : x
2. Step 2: Convert to fraction form
   1,013,908.60/1,399,047.42 = 561,198.52/x
3. Step 3: Cross multiply
   1,013,908.60x = 1,399,047.42 × 561,198.52
4. Step 4: Simplify right side
   1,013,908.60x = 785,143,341,513.82
5. Step 5: Solve for x
   x = 785,143,341,513.82/1,013,908.60
6. Step 6: Final answer
   x = 774,372.90