Finding the Fourth Proportional to 805,947.31, 1,111,443.90 and 515,650.74

Step by Step Solution

1. Step 1: Write the proportion equation
   805,947.31 : 1,111,443.90 = 515,650.74 : x
2. Step 2: Convert to fraction form
   805,947.31/1,111,443.90 = 515,650.74/x
3. Step 3: Cross multiply
   805,947.31x = 1,111,443.90 × 515,650.74
4. Step 4: Simplify right side
   805,947.31x = 573,116,869,503.49
5. Step 5: Solve for x
   x = 573,116,869,503.49/805,947.31
6. Step 6: Final answer
   x = 711,109.60