Finding the Fourth Proportional to 2,610.75, 3,602.85 and 1,431.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.75 : 3,602.85 = 1,431.87 : x
2. Step 2: Convert to fraction form
   2,610.75/3,602.85 = 1,431.87/x
3. Step 3: Cross multiply
   2,610.75x = 3,602.85 × 1,431.87
4. Step 4: Simplify right side
   2,610.75x = 5,158,812.83
5. Step 5: Solve for x
   x = 5,158,812.83/2,610.75
6. Step 6: Final answer
   x = 1,975.99