Finding the Fourth Proportional to 1,511.31, 2,085.62 and 882.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511.31 : 2,085.62 = 882.28 : x
2. Step 2: Convert to fraction form
   1,511.31/2,085.62 = 882.28/x
3. Step 3: Cross multiply
   1,511.31x = 2,085.62 × 882.28
4. Step 4: Simplify right side
   1,511.31x = 1,840,100.81
5. Step 5: Solve for x
   x = 1,840,100.81/1,511.31
6. Step 6: Final answer
   x = 1,217.55