Finding the Fourth Proportional to 1,541.85, 2,127.69 and 878.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,541.85 : 2,127.69 = 878.73 : x
2. Step 2: Convert to fraction form
   1,541.85/2,127.69 = 878.73/x
3. Step 3: Cross multiply
   1,541.85x = 2,127.69 × 878.73
4. Step 4: Simplify right side
   1,541.85x = 1,869,665.03
5. Step 5: Solve for x
   x = 1,869,665.03/1,541.85
6. Step 6: Final answer
   x = 1,212.61