Finding the Fourth Proportional to 3,111.08, 4,689.90 and 2,904.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.08 : 4,689.90 = 2,904.83 : x
2. Step 2: Convert to fraction form
   3,111.08/4,689.90 = 2,904.83/x
3. Step 3: Cross multiply
   3,111.08x = 4,689.90 × 2,904.83
4. Step 4: Simplify right side
   3,111.08x = 13,623,356.35
5. Step 5: Solve for x
   x = 13,623,356.35/3,111.08
6. Step 6: Final answer
   x = 4,378.99