Finding the Fourth Proportional to 1,009,498.68, 1,393,105.50 and 579,806.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009,498.68 : 1,393,105.50 = 579,806.64 : x
2. Step 2: Convert to fraction form
   1,009,498.68/1,393,105.50 = 579,806.64/x
3. Step 3: Cross multiply
   1,009,498.68x = 1,393,105.50 × 579,806.64
4. Step 4: Simplify right side
   1,009,498.68x = 807,731,819,120.52
5. Step 5: Solve for x
   x = 807,731,819,120.52/1,009,498.68
6. Step 6: Final answer
   x = 800,131.62