Finding the Fourth Proportional to 2,291.59, 3,437.68 and 648.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.59 : 3,437.68 = 648.10 : x
2. Step 2: Convert to fraction form
   2,291.59/3,437.68 = 648.10/x
3. Step 3: Cross multiply
   2,291.59x = 3,437.68 × 648.10
4. Step 4: Simplify right side
   2,291.59x = 2,227,943.22
5. Step 5: Solve for x
   x = 2,227,943.22/2,291.59
6. Step 6: Final answer
   x = 972.23