Finding the Fourth Proportional to 805,068.30, 1,111,099.37 and 519,419.37

Step by Step Solution

1. Step 1: Write the proportion equation
   805,068.30 : 1,111,099.37 = 519,419.37 : x
2. Step 2: Convert to fraction form
   805,068.30/1,111,099.37 = 519,419.37/x
3. Step 3: Cross multiply
   805,068.30x = 1,111,099.37 × 519,419.37
4. Step 4: Simplify right side
   805,068.30x = 577,126,532,175.70
5. Step 5: Solve for x
   x = 577,126,532,175.70/805,068.30
6. Step 6: Final answer
   x = 716,866.55