Finding the Fourth Proportional to 2,612.72, 3,605.70 and 1,551.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.72 : 3,605.70 = 1,551.11 : x
2. Step 2: Convert to fraction form
   2,612.72/3,605.70 = 1,551.11/x
3. Step 3: Cross multiply
   2,612.72x = 3,605.70 × 1,551.11
4. Step 4: Simplify right side
   2,612.72x = 5,592,819.30
5. Step 5: Solve for x
   x = 5,592,819.30/2,612.72
6. Step 6: Final answer
   x = 2,140.62