Finding the Fourth Proportional to 3,385.89, 5,079.66 and 1,077.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,385.89 : 5,079.66 = 1,077.39 : x
2. Step 2: Convert to fraction form
   3,385.89/5,079.66 = 1,077.39/x
3. Step 3: Cross multiply
   3,385.89x = 5,079.66 × 1,077.39
4. Step 4: Simplify right side
   3,385.89x = 5,472,774.89
5. Step 5: Solve for x
   x = 5,472,774.89/3,385.89
6. Step 6: Final answer
   x = 1,616.35