Finding the Fourth Proportional to 2,898.24, 3,998.89 and 1,955.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,898.24 : 3,998.89 = 1,955.77 : x
2. Step 2: Convert to fraction form
   2,898.24/3,998.89 = 1,955.77/x
3. Step 3: Cross multiply
   2,898.24x = 3,998.89 × 1,955.77
4. Step 4: Simplify right side
   2,898.24x = 7,820,909.10
5. Step 5: Solve for x
   x = 7,820,909.10/2,898.24
6. Step 6: Final answer
   x = 2,698.50