Finding the Fourth Proportional to 2,415.72, 3,621.12 and 934.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415.72 : 3,621.12 = 934.54 : x
2. Step 2: Convert to fraction form
   2,415.72/3,621.12 = 934.54/x
3. Step 3: Cross multiply
   2,415.72x = 3,621.12 × 934.54
4. Step 4: Simplify right side
   2,415.72x = 3,384,081.48
5. Step 5: Solve for x
   x = 3,384,081.48/2,415.72
6. Step 6: Final answer
   x = 1,400.86