Finding the Fourth Proportional to 3,111.13, 4,293.36 and 1,784.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.13 : 4,293.36 = 1,784.78 : x
2. Step 2: Convert to fraction form
   3,111.13/4,293.36 = 1,784.78/x
3. Step 3: Cross multiply
   3,111.13x = 4,293.36 × 1,784.78
4. Step 4: Simplify right side
   3,111.13x = 7,662,672.67
5. Step 5: Solve for x
   x = 7,662,672.67/3,111.13
6. Step 6: Final answer
   x = 2,462.99