Finding the Fourth Proportional to 1,498.96, 2,068.84 and 878

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.96 : 2,068.84 = 878 : x
2. Step 2: Convert to fraction form
   1,498.96/2,068.84 = 878/x
3. Step 3: Cross multiply
   1,498.96x = 2,068.84 × 878
4. Step 4: Simplify right side
   1,498.96x = 1,816,441.52
5. Step 5: Solve for x
   x = 1,816,441.52/1,498.96
6. Step 6: Final answer
   x = 1,211.80