Finding the Fourth Proportional to 1,615.33, 2,229.50 and 1,025.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615.33 : 2,229.50 = 1,025.74 : x
2. Step 2: Convert to fraction form
   1,615.33/2,229.50 = 1,025.74/x
3. Step 3: Cross multiply
   1,615.33x = 2,229.50 × 1,025.74
4. Step 4: Simplify right side
   1,615.33x = 2,286,887.33
5. Step 5: Solve for x
   x = 2,286,887.33/1,615.33
6. Step 6: Final answer
   x = 1,415.74