Finding the Fourth Proportional to 2,277.89, 3,417.31 and 718.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277.89 : 3,417.31 = 718.34 : x
2. Step 2: Convert to fraction form
   2,277.89/3,417.31 = 718.34/x
3. Step 3: Cross multiply
   2,277.89x = 3,417.31 × 718.34
4. Step 4: Simplify right side
   2,277.89x = 2,454,774.28
5. Step 5: Solve for x
   x = 2,454,774.28/2,277.89
6. Step 6: Final answer
   x = 1,077.65