Finding the Fourth Proportional to 1,400.74, 1,932.15 and 1,008.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.74 : 1,932.15 = 1,008.28 : x
2. Step 2: Convert to fraction form
   1,400.74/1,932.15 = 1,008.28/x
3. Step 3: Cross multiply
   1,400.74x = 1,932.15 × 1,008.28
4. Step 4: Simplify right side
   1,400.74x = 1,948,148.20
5. Step 5: Solve for x
   x = 1,948,148.20/1,400.74
6. Step 6: Final answer
   x = 1,390.80