Finding the Fourth Proportional to 1,788.42, 2,468.25 and 1,042.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,788.42 : 2,468.25 = 1,042.80 : x
2. Step 2: Convert to fraction form
   1,788.42/2,468.25 = 1,042.80/x
3. Step 3: Cross multiply
   1,788.42x = 2,468.25 × 1,042.80
4. Step 4: Simplify right side
   1,788.42x = 2,573,891.10
5. Step 5: Solve for x
   x = 2,573,891.10/1,788.42
6. Step 6: Final answer
   x = 1,439.20