Finding the Fourth Proportional to 1,865.12, 2,573.81 and 1,025.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.12 : 2,573.81 = 1,025.82 : x
2. Step 2: Convert to fraction form
   1,865.12/2,573.81 = 1,025.82/x
3. Step 3: Cross multiply
   1,865.12x = 2,573.81 × 1,025.82
4. Step 4: Simplify right side
   1,865.12x = 2,640,274.77
5. Step 5: Solve for x
   x = 2,640,274.77/1,865.12
6. Step 6: Final answer
   x = 1,415.61