Finding the Fourth Proportional to 2,312.79, 3,468.27 and 925.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,312.79 : 3,468.27 = 925.87 : x
2. Step 2: Convert to fraction form
   2,312.79/3,468.27 = 925.87/x
3. Step 3: Cross multiply
   2,312.79x = 3,468.27 × 925.87
4. Step 4: Simplify right side
   2,312.79x = 3,211,158.47
5. Step 5: Solve for x
   x = 3,211,158.47/2,312.79
6. Step 6: Final answer
   x = 1,388.43