Finding the Fourth Proportional to 2,490.79, 3,734.91 and 1,394.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.79 : 3,734.91 = 1,394.86 : x
2. Step 2: Convert to fraction form
   2,490.79/3,734.91 = 1,394.86/x
3. Step 3: Cross multiply
   2,490.79x = 3,734.91 × 1,394.86
4. Step 4: Simplify right side
   2,490.79x = 5,209,676.56
5. Step 5: Solve for x
   x = 5,209,676.56/2,490.79
6. Step 6: Final answer
   x = 2,091.58