Finding the Fourth Proportional to 1,788.10, 2,467.47 and 1,042.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,788.10 : 2,467.47 = 1,042.18 : x
2. Step 2: Convert to fraction form
   1,788.10/2,467.47 = 1,042.18/x
3. Step 3: Cross multiply
   1,788.10x = 2,467.47 × 1,042.18
4. Step 4: Simplify right side
   1,788.10x = 2,571,541.72
5. Step 5: Solve for x
   x = 2,571,541.72/1,788.10
6. Step 6: Final answer
   x = 1,438.14