Finding the Fourth Proportional to 1,642.01, 2,456.80 and 948.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642.01 : 2,456.80 = 948.98 : x
2. Step 2: Convert to fraction form
   1,642.01/2,456.80 = 948.98/x
3. Step 3: Cross multiply
   1,642.01x = 2,456.80 × 948.98
4. Step 4: Simplify right side
   1,642.01x = 2,331,457.83
5. Step 5: Solve for x
   x = 2,331,457.83/1,642.01
6. Step 6: Final answer
   x = 1,419.88