Finding the Fourth Proportional to 1,651.61, 2,278.04 and 1,061.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,651.61 : 2,278.04 = 1,061.57 : x
2. Step 2: Convert to fraction form
   1,651.61/2,278.04 = 1,061.57/x
3. Step 3: Cross multiply
   1,651.61x = 2,278.04 × 1,061.57
4. Step 4: Simplify right side
   1,651.61x = 2,418,299.31
5. Step 5: Solve for x
   x = 2,418,299.31/1,651.61
6. Step 6: Final answer
   x = 1,464.21