Finding the Fourth Proportional to 1,377.92, 1,900.98 and 880.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.92 : 1,900.98 = 880.43 : x
2. Step 2: Convert to fraction form
   1,377.92/1,900.98 = 880.43/x
3. Step 3: Cross multiply
   1,377.92x = 1,900.98 × 880.43
4. Step 4: Simplify right side
   1,377.92x = 1,673,679.82
5. Step 5: Solve for x
   x = 1,673,679.82/1,377.92
6. Step 6: Final answer
   x = 1,214.64