Finding the Fourth Proportional to 2,392.50, 3,587.84 and 931.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,392.50 : 3,587.84 = 931.46 : x
2. Step 2: Convert to fraction form
   2,392.50/3,587.84 = 931.46/x
3. Step 3: Cross multiply
   2,392.50x = 3,587.84 × 931.46
4. Step 4: Simplify right side
   2,392.50x = 3,341,929.45
5. Step 5: Solve for x
   x = 3,341,929.45/2,392.50
6. Step 6: Final answer
   x = 1,396.84