Finding the Fourth Proportional to 2,773.86, 4,160.32 and 1,385.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,773.86 : 4,160.32 = 1,385.72 : x
2. Step 2: Convert to fraction form
   2,773.86/4,160.32 = 1,385.72/x
3. Step 3: Cross multiply
   2,773.86x = 4,160.32 × 1,385.72
4. Step 4: Simplify right side
   2,773.86x = 5,765,038.63
5. Step 5: Solve for x
   x = 5,765,038.63/2,773.86
6. Step 6: Final answer
   x = 2,078.35