Finding the Fourth Proportional to 1,868.32, 2,573.54 and 1,425.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.32 : 2,573.54 = 1,425.45 : x
2. Step 2: Convert to fraction form
   1,868.32/2,573.54 = 1,425.45/x
3. Step 3: Cross multiply
   1,868.32x = 2,573.54 × 1,425.45
4. Step 4: Simplify right side
   1,868.32x = 3,668,451.90
5. Step 5: Solve for x
   x = 3,668,451.90/1,868.32
6. Step 6: Final answer
   x = 1,963.50