Finding the Fourth Proportional to 2,385.18, 3,579.12 and 925.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.18 : 3,579.12 = 925.56 : x
2. Step 2: Convert to fraction form
   2,385.18/3,579.12 = 925.56/x
3. Step 3: Cross multiply
   2,385.18x = 3,579.12 × 925.56
4. Step 4: Simplify right side
   2,385.18x = 3,312,690.31
5. Step 5: Solve for x
   x = 3,312,690.31/2,385.18
6. Step 6: Final answer
   x = 1,388.86