Finding the Fourth Proportional to 3,779.06, 5,215.01 and 2,100.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,779.06 : 5,215.01 = 2,100.42 : x
2. Step 2: Convert to fraction form
   3,779.06/5,215.01 = 2,100.42/x
3. Step 3: Cross multiply
   3,779.06x = 5,215.01 × 2,100.42
4. Step 4: Simplify right side
   3,779.06x = 10,953,700.80
5. Step 5: Solve for x
   x = 10,953,700.80/3,779.06
6. Step 6: Final answer
   x = 2,898.53