Finding the Fourth Proportional to 2,661.24, 3,991.84 and 929.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.24 : 3,991.84 = 929.46 : x
2. Step 2: Convert to fraction form
   2,661.24/3,991.84 = 929.46/x
3. Step 3: Cross multiply
   2,661.24x = 3,991.84 × 929.46
4. Step 4: Simplify right side
   2,661.24x = 3,710,255.61
5. Step 5: Solve for x
   x = 3,710,255.61/2,661.24
6. Step 6: Final answer
   x = 1,394.18