Finding the Fourth Proportional to 1,314.51, 1,813.98 and 725.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.51 : 1,813.98 = 725.06 : x
2. Step 2: Convert to fraction form
   1,314.51/1,813.98 = 725.06/x
3. Step 3: Cross multiply
   1,314.51x = 1,813.98 × 725.06
4. Step 4: Simplify right side
   1,314.51x = 1,315,235.27
5. Step 5: Solve for x
   x = 1,315,235.27/1,314.51
6. Step 6: Final answer
   x = 1,000.55