Finding the Fourth Proportional to 2,276.63, 3,142.31 and 1,393.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,276.63 : 3,142.31 = 1,393.18 : x
2. Step 2: Convert to fraction form
   2,276.63/3,142.31 = 1,393.18/x
3. Step 3: Cross multiply
   2,276.63x = 3,142.31 × 1,393.18
4. Step 4: Simplify right side
   2,276.63x = 4,377,788.62
5. Step 5: Solve for x
   x = 4,377,788.62/2,276.63
6. Step 6: Final answer
   x = 1,922.93