Finding the Fourth Proportional to 2,426.38, 3,348.93 and 1,431.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.38 : 3,348.93 = 1,431.30 : x
2. Step 2: Convert to fraction form
   2,426.38/3,348.93 = 1,431.30/x
3. Step 3: Cross multiply
   2,426.38x = 3,348.93 × 1,431.30
4. Step 4: Simplify right side
   2,426.38x = 4,793,323.51
5. Step 5: Solve for x
   x = 4,793,323.51/2,426.38
6. Step 6: Final answer
   x = 1,975.50