Finding the Fourth Proportional to 2,610.78, 3,602.98 and 1,491.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.78 : 3,602.98 = 1,491.90 : x
2. Step 2: Convert to fraction form
   2,610.78/3,602.98 = 1,491.90/x
3. Step 3: Cross multiply
   2,610.78x = 3,602.98 × 1,491.90
4. Step 4: Simplify right side
   2,610.78x = 5,375,285.86
5. Step 5: Solve for x
   x = 5,375,285.86/2,610.78
6. Step 6: Final answer
   x = 2,058.88