Finding the Fourth Proportional to 2,932.74, 4,400.15 and 1,290.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,932.74 : 4,400.15 = 1,290.47 : x
2. Step 2: Convert to fraction form
   2,932.74/4,400.15 = 1,290.47/x
3. Step 3: Cross multiply
   2,932.74x = 4,400.15 × 1,290.47
4. Step 4: Simplify right side
   2,932.74x = 5,678,233.12
5. Step 5: Solve for x
   x = 5,678,233.12/2,932.74
6. Step 6: Final answer
   x = 1,936.15