Finding the Fourth Proportional to 2,906.89, 4,358.58 and 1,031.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,906.89 : 4,358.58 = 1,031.86 : x
2. Step 2: Convert to fraction form
   2,906.89/4,358.58 = 1,031.86/x
3. Step 3: Cross multiply
   2,906.89x = 4,358.58 × 1,031.86
4. Step 4: Simplify right side
   2,906.89x = 4,497,466.90
5. Step 5: Solve for x
   x = 4,497,466.90/2,906.89
6. Step 6: Final answer
   x = 1,547.18