Finding the Fourth Proportional to 1,426.13, 2,141.52 and 881.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.13 : 2,141.52 = 881.78 : x
2. Step 2: Convert to fraction form
   1,426.13/2,141.52 = 881.78/x
3. Step 3: Cross multiply
   1,426.13x = 2,141.52 × 881.78
4. Step 4: Simplify right side
   1,426.13x = 1,888,349.51
5. Step 5: Solve for x
   x = 1,888,349.51/1,426.13
6. Step 6: Final answer
   x = 1,324.11