Finding the Fourth Proportional to 2,801.12, 4,202.04 and 2,606.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.12 : 4,202.04 = 2,606.72 : x
2. Step 2: Convert to fraction form
   2,801.12/4,202.04 = 2,606.72/x
3. Step 3: Cross multiply
   2,801.12x = 4,202.04 × 2,606.72
4. Step 4: Simplify right side
   2,801.12x = 10,953,541.71
5. Step 5: Solve for x
   x = 10,953,541.71/2,801.12
6. Step 6: Final answer
   x = 3,910.42