Finding the Fourth Proportional to 2,610.86, 3,602.93 and 1,431.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.86 : 3,602.93 = 1,431.90 : x
2. Step 2: Convert to fraction form
   2,610.86/3,602.93 = 1,431.90/x
3. Step 3: Cross multiply
   2,610.86x = 3,602.93 × 1,431.90
4. Step 4: Simplify right side
   2,610.86x = 5,159,028.31
5. Step 5: Solve for x
   x = 5,159,028.31/2,610.86
6. Step 6: Final answer
   x = 1,975.99