Finding the Fourth Proportional to 2,426.18, 3,347.81 and 1,431.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.18 : 3,347.81 = 1,431.30 : x
2. Step 2: Convert to fraction form
   2,426.18/3,347.81 = 1,431.30/x
3. Step 3: Cross multiply
   2,426.18x = 3,347.81 × 1,431.30
4. Step 4: Simplify right side
   2,426.18x = 4,791,698.95
5. Step 5: Solve for x
   x = 4,791,698.95/2,426.18
6. Step 6: Final answer
   x = 1,975.00