Finding the Fourth Proportional to 1,117,300.86, 1,676,118.02 and 518,322.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,117,300.86 : 1,676,118.02 = 518,322.56 : x
2. Step 2: Convert to fraction form
   1,117,300.86/1,676,118.02 = 518,322.56/x
3. Step 3: Cross multiply
   1,117,300.86x = 1,676,118.02 × 518,322.56
4. Step 4: Simplify right side
   1,117,300.86x = 868,769,772,016.33
5. Step 5: Solve for x
   x = 868,769,772,016.33/1,117,300.86
6. Step 6: Final answer
   x = 777,561.18