Finding the Fourth Proportional to 2,385.87, 3,579.50 and 742.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.87 : 3,579.50 = 742.56 : x
2. Step 2: Convert to fraction form
   2,385.87/3,579.50 = 742.56/x
3. Step 3: Cross multiply
   2,385.87x = 3,579.50 × 742.56
4. Step 4: Simplify right side
   2,385.87x = 2,657,993.52
5. Step 5: Solve for x
   x = 2,657,993.52/2,385.87
6. Step 6: Final answer
   x = 1,114.06