Finding the Fourth Proportional to 1,401.92, 2,101.57 and 880.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.92 : 2,101.57 = 880.33 : x
2. Step 2: Convert to fraction form
   1,401.92/2,101.57 = 880.33/x
3. Step 3: Cross multiply
   1,401.92x = 2,101.57 × 880.33
4. Step 4: Simplify right side
   1,401.92x = 1,850,075.12
5. Step 5: Solve for x
   x = 1,850,075.12/1,401.92
6. Step 6: Final answer
   x = 1,319.67