Finding the Fourth Proportional to 1,314.31, 1,813.72 and 724.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.31 : 1,813.72 = 724.84 : x
2. Step 2: Convert to fraction form
   1,314.31/1,813.72 = 724.84/x
3. Step 3: Cross multiply
   1,314.31x = 1,813.72 × 724.84
4. Step 4: Simplify right side
   1,314.31x = 1,314,656.80
5. Step 5: Solve for x
   x = 1,314,656.80/1,314.31
6. Step 6: Final answer
   x = 1,000.26