Finding the Fourth Proportional to 1,580.24, 2,180.76 and 881.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,580.24 : 2,180.76 = 881.54 : x
2. Step 2: Convert to fraction form
   1,580.24/2,180.76 = 881.54/x
3. Step 3: Cross multiply
   1,580.24x = 2,180.76 × 881.54
4. Step 4: Simplify right side
   1,580.24x = 1,922,427.17
5. Step 5: Solve for x
   x = 1,922,427.17/1,580.24
6. Step 6: Final answer
   x = 1,216.54