Finding the Fourth Proportional to 2,610.76, 3,602.70 and 1,431.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.76 : 3,602.70 = 1,431.62 : x
2. Step 2: Convert to fraction form
   2,610.76/3,602.70 = 1,431.62/x
3. Step 3: Cross multiply
   2,610.76x = 3,602.70 × 1,431.62
4. Step 4: Simplify right side
   2,610.76x = 5,157,697.37
5. Step 5: Solve for x
   x = 5,157,697.37/2,610.76
6. Step 6: Final answer
   x = 1,975.55