Finding the Fourth Proportional to 2,290.86, 3,161.52 and 1,347.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.86 : 3,161.52 = 1,347.39 : x
2. Step 2: Convert to fraction form
   2,290.86/3,161.52 = 1,347.39/x
3. Step 3: Cross multiply
   2,290.86x = 3,161.52 × 1,347.39
4. Step 4: Simplify right side
   2,290.86x = 4,259,800.43
5. Step 5: Solve for x
   x = 4,259,800.43/2,290.86
6. Step 6: Final answer
   x = 1,859.48