Finding the Fourth Proportional to 2,390.76, 3,587.49 and 929.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.76 : 3,587.49 = 929.71 : x
2. Step 2: Convert to fraction form
   2,390.76/3,587.49 = 929.71/x
3. Step 3: Cross multiply
   2,390.76x = 3,587.49 × 929.71
4. Step 4: Simplify right side
   2,390.76x = 3,335,325.33
5. Step 5: Solve for x
   x = 3,335,325.33/2,390.76
6. Step 6: Final answer
   x = 1,395.09