Finding the Fourth Proportional to 1,131.76, 1,559.71 and 882.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.76 : 1,559.71 = 882.68 : x
2. Step 2: Convert to fraction form
   1,131.76/1,559.71 = 882.68/x
3. Step 3: Cross multiply
   1,131.76x = 1,559.71 × 882.68
4. Step 4: Simplify right side
   1,131.76x = 1,376,726.52
5. Step 5: Solve for x
   x = 1,376,726.52/1,131.76
6. Step 6: Final answer
   x = 1,216.45