Finding the Fourth Proportional to 2,159.10, 3,238.17 and 772.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159.10 : 3,238.17 = 772.53 : x
2. Step 2: Convert to fraction form
   2,159.10/3,238.17 = 772.53/x
3. Step 3: Cross multiply
   2,159.10x = 3,238.17 × 772.53
4. Step 4: Simplify right side
   2,159.10x = 2,501,574.22
5. Step 5: Solve for x
   x = 2,501,574.22/2,159.10
6. Step 6: Final answer
   x = 1,158.62