Finding the Fourth Proportional to 2,040.39, 2,816.01 and 1,948.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.39 : 2,816.01 = 1,948.05 : x
2. Step 2: Convert to fraction form
   2,040.39/2,816.01 = 1,948.05/x
3. Step 3: Cross multiply
   2,040.39x = 2,816.01 × 1,948.05
4. Step 4: Simplify right side
   2,040.39x = 5,485,728.28
5. Step 5: Solve for x
   x = 5,485,728.28/2,040.39
6. Step 6: Final answer
   x = 2,688.57