Finding the Fourth Proportional to 1,640.32, 2,250.91 and 1,491.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640.32 : 2,250.91 = 1,491.82 : x
2. Step 2: Convert to fraction form
   1,640.32/2,250.91 = 1,491.82/x
3. Step 3: Cross multiply
   1,640.32x = 2,250.91 × 1,491.82
4. Step 4: Simplify right side
   1,640.32x = 3,357,952.56
5. Step 5: Solve for x
   x = 3,357,952.56/1,640.32
6. Step 6: Final answer
   x = 2,047.13