Finding the Fourth Proportional to 2,077.72, 3,117.50 and 1,103.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.72 : 3,117.50 = 1,103.91 : x
2. Step 2: Convert to fraction form
   2,077.72/3,117.50 = 1,103.91/x
3. Step 3: Cross multiply
   2,077.72x = 3,117.50 × 1,103.91
4. Step 4: Simplify right side
   2,077.72x = 3,441,439.43
5. Step 5: Solve for x
   x = 3,441,439.43/2,077.72
6. Step 6: Final answer
   x = 1,656.35