Finding the Fourth Proportional to 805,068.55, 1,111,099.71 and 519,419.62

Step by Step Solution

1. Step 1: Write the proportion equation
   805,068.55 : 1,111,099.71 = 519,419.62 : x
2. Step 2: Convert to fraction form
   805,068.55/1,111,099.71 = 519,419.62/x
3. Step 3: Cross multiply
   805,068.55x = 1,111,099.71 × 519,419.62
4. Step 4: Simplify right side
   805,068.55x = 577,126,989,150.31
5. Step 5: Solve for x
   x = 577,126,989,150.31/805,068.55
6. Step 6: Final answer
   x = 716,866.89