Finding the Fourth Proportional to 1,477.57, 2,039.34 and 880.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,477.57 : 2,039.34 = 880.21 : x
2. Step 2: Convert to fraction form
   1,477.57/2,039.34 = 880.21/x
3. Step 3: Cross multiply
   1,477.57x = 2,039.34 × 880.21
4. Step 4: Simplify right side
   1,477.57x = 1,795,047.46
5. Step 5: Solve for x
   x = 1,795,047.46/1,477.57
6. Step 6: Final answer
   x = 1,214.86