Finding the Fourth Proportional to 1,590.72, 2,195.17 and 882.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,590.72 : 2,195.17 = 882.56 : x
2. Step 2: Convert to fraction form
   1,590.72/2,195.17 = 882.56/x
3. Step 3: Cross multiply
   1,590.72x = 2,195.17 × 882.56
4. Step 4: Simplify right side
   1,590.72x = 1,937,372.52
5. Step 5: Solve for x
   x = 1,937,372.52/1,590.72
6. Step 6: Final answer
   x = 1,217.92