Finding the Fourth Proportional to 1,641.61, 2,264.56 and 1,074.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.61 : 2,264.56 = 1,074.77 : x
2. Step 2: Convert to fraction form
   1,641.61/2,264.56 = 1,074.77/x
3. Step 3: Cross multiply
   1,641.61x = 2,264.56 × 1,074.77
4. Step 4: Simplify right side
   1,641.61x = 2,433,869.83
5. Step 5: Solve for x
   x = 2,433,869.83/1,641.61
6. Step 6: Final answer
   x = 1,482.62