Finding the Fourth Proportional to 1,864.31, 2,572.61 and 1,025.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,864.31 : 2,572.61 = 1,025.07 : x
2. Step 2: Convert to fraction form
   1,864.31/2,572.61 = 1,025.07/x
3. Step 3: Cross multiply
   1,864.31x = 2,572.61 × 1,025.07
4. Step 4: Simplify right side
   1,864.31x = 2,637,094.40
5. Step 5: Solve for x
   x = 2,637,094.40/1,864.31
6. Step 6: Final answer
   x = 1,414.52