Finding the Fourth Proportional to 1,865.07, 2,573.82 and 1,025.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.07 : 2,573.82 = 1,025.87 : x
2. Step 2: Convert to fraction form
   1,865.07/2,573.82 = 1,025.87/x
3. Step 3: Cross multiply
   1,865.07x = 2,573.82 × 1,025.87
4. Step 4: Simplify right side
   1,865.07x = 2,640,404.72
5. Step 5: Solve for x
   x = 2,640,404.72/1,865.07
6. Step 6: Final answer
   x = 1,415.71