Finding the Fourth Proportional to 1,100.74, 1,648.92 and 881.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.74 : 1,648.92 = 881.80 : x
2. Step 2: Convert to fraction form
   1,100.74/1,648.92 = 881.80/x
3. Step 3: Cross multiply
   1,100.74x = 1,648.92 × 881.80
4. Step 4: Simplify right side
   1,100.74x = 1,454,017.66
5. Step 5: Solve for x
   x = 1,454,017.66/1,100.74
6. Step 6: Final answer
   x = 1,320.95