Finding the Fourth Proportional to 1,314.10, 1,813.48 and 724.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.10 : 1,813.48 = 724.62 : x
2. Step 2: Convert to fraction form
   1,314.10/1,813.48 = 724.62/x
3. Step 3: Cross multiply
   1,314.10x = 1,813.48 × 724.62
4. Step 4: Simplify right side
   1,314.10x = 1,314,083.88
5. Step 5: Solve for x
   x = 1,314,083.88/1,314.10
6. Step 6: Final answer
   x = 999.99