Finding the Fourth Proportional to 2,385.59, 3,294.54 and 1,641.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.59 : 3,294.54 = 1,641.47 : x
2. Step 2: Convert to fraction form
   2,385.59/3,294.54 = 1,641.47/x
3. Step 3: Cross multiply
   2,385.59x = 3,294.54 × 1,641.47
4. Step 4: Simplify right side
   2,385.59x = 5,407,872.10
5. Step 5: Solve for x
   x = 5,407,872.10/2,385.59
6. Step 6: Final answer
   x = 2,266.90