Finding the Fourth Proportional to 1,641.76, 2,264.52 and 1,291.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.76 : 2,264.52 = 1,291.84 : x
2. Step 2: Convert to fraction form
   1,641.76/2,264.52 = 1,291.84/x
3. Step 3: Cross multiply
   1,641.76x = 2,264.52 × 1,291.84
4. Step 4: Simplify right side
   1,641.76x = 2,925,397.52
5. Step 5: Solve for x
   x = 2,925,397.52/1,641.76
6. Step 6: Final answer
   x = 1,781.87