Finding the Fourth Proportional to 1,404.81, 1,938.87 and 880.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.81 : 1,938.87 = 880.92 : x
2. Step 2: Convert to fraction form
   1,404.81/1,938.87 = 880.92/x
3. Step 3: Cross multiply
   1,404.81x = 1,938.87 × 880.92
4. Step 4: Simplify right side
   1,404.81x = 1,707,989.36
5. Step 5: Solve for x
   x = 1,707,989.36/1,404.81
6. Step 6: Final answer
   x = 1,215.82