Finding the Fourth Proportional to 1,541.37, 2,127.15 and 878.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,541.37 : 2,127.15 = 878.34 : x
2. Step 2: Convert to fraction form
   1,541.37/2,127.15 = 878.34/x
3. Step 3: Cross multiply
   1,541.37x = 2,127.15 × 878.34
4. Step 4: Simplify right side
   1,541.37x = 1,868,360.93
5. Step 5: Solve for x
   x = 1,868,360.93/1,541.37
6. Step 6: Final answer
   x = 1,212.14