Finding the Fourth Proportional to 1,642.65, 2,266.83 and 896.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642.65 : 2,266.83 = 896.59 : x
2. Step 2: Convert to fraction form
   1,642.65/2,266.83 = 896.59/x
3. Step 3: Cross multiply
   1,642.65x = 2,266.83 × 896.59
4. Step 4: Simplify right side
   1,642.65x = 2,032,419.94
5. Step 5: Solve for x
   x = 2,032,419.94/1,642.65
6. Step 6: Final answer
   x = 1,237.28