Finding the Fourth Proportional to 2,485.76, 3,730.43 and 925.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.76 : 3,730.43 = 925.99 : x
2. Step 2: Convert to fraction form
   2,485.76/3,730.43 = 925.99/x
3. Step 3: Cross multiply
   2,485.76x = 3,730.43 × 925.99
4. Step 4: Simplify right side
   2,485.76x = 3,454,333.86
5. Step 5: Solve for x
   x = 3,454,333.86/2,485.76
6. Step 6: Final answer
   x = 1,389.65