Finding the Fourth Proportional to 2,610.77, 3,602.86 and 1,431.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.77 : 3,602.86 = 1,431.90 : x
2. Step 2: Convert to fraction form
   2,610.77/3,602.86 = 1,431.90/x
3. Step 3: Cross multiply
   2,610.77x = 3,602.86 × 1,431.90
4. Step 4: Simplify right side
   2,610.77x = 5,158,931.65
5. Step 5: Solve for x
   x = 5,158,931.65/2,610.77
6. Step 6: Final answer
   x = 1,976.02