Finding the Fourth Proportional to 1,314.42, 1,813.89 and 724.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.42 : 1,813.89 = 724.95 : x
2. Step 2: Convert to fraction form
   1,314.42/1,813.89 = 724.95/x
3. Step 3: Cross multiply
   1,314.42x = 1,813.89 × 724.95
4. Step 4: Simplify right side
   1,314.42x = 1,314,979.56
5. Step 5: Solve for x
   x = 1,314,979.56/1,314.42
6. Step 6: Final answer
   x = 1,000.43