Finding the Fourth Proportional to 1,502.15, 2,072.43 and 881.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,502.15 : 2,072.43 = 881.15 : x
2. Step 2: Convert to fraction form
   1,502.15/2,072.43 = 881.15/x
3. Step 3: Cross multiply
   1,502.15x = 2,072.43 × 881.15
4. Step 4: Simplify right side
   1,502.15x = 1,826,111.33
5. Step 5: Solve for x
   x = 1,826,111.33/1,502.15
6. Step 6: Final answer
   x = 1,215.67