Finding the Fourth Proportional to 1,642.88, 2,465.37 and 949.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642.88 : 2,465.37 = 949.12 : x
2. Step 2: Convert to fraction form
   1,642.88/2,465.37 = 949.12/x
3. Step 3: Cross multiply
   1,642.88x = 2,465.37 × 949.12
4. Step 4: Simplify right side
   1,642.88x = 2,339,925.81
5. Step 5: Solve for x
   x = 2,339,925.81/1,642.88
6. Step 6: Final answer
   x = 1,424.28