Finding the Fourth Proportional to 2,431.10, 3,642.86 and 1,131.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.10 : 3,642.86 = 1,131.05 : x
2. Step 2: Convert to fraction form
   2,431.10/3,642.86 = 1,131.05/x
3. Step 3: Cross multiply
   2,431.10x = 3,642.86 × 1,131.05
4. Step 4: Simplify right side
   2,431.10x = 4,120,232.93
5. Step 5: Solve for x
   x = 4,120,232.93/2,431.10
6. Step 6: Final answer
   x = 1,694.81