Finding the Fourth Proportional to 3,498.12, 4,827.42 and 2,100.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,498.12 : 4,827.42 = 2,100.88 : x
2. Step 2: Convert to fraction form
   3,498.12/4,827.42 = 2,100.88/x
3. Step 3: Cross multiply
   3,498.12x = 4,827.42 × 2,100.88
4. Step 4: Simplify right side
   3,498.12x = 10,141,830.13
5. Step 5: Solve for x
   x = 10,141,830.13/3,498.12
6. Step 6: Final answer
   x = 2,899.22