Finding the Fourth Proportional to 1,498.40, 2,066.96 and 877.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.40 : 2,066.96 = 877.28 : x
2. Step 2: Convert to fraction form
   1,498.40/2,066.96 = 877.28/x
3. Step 3: Cross multiply
   1,498.40x = 2,066.96 × 877.28
4. Step 4: Simplify right side
   1,498.40x = 1,813,302.67
5. Step 5: Solve for x
   x = 1,813,302.67/1,498.40
6. Step 6: Final answer
   x = 1,210.16