Finding the Fourth Proportional to 2,017.31, 3,025.18 and 784.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.31 : 3,025.18 = 784.56 : x
2. Step 2: Convert to fraction form
   2,017.31/3,025.18 = 784.56/x
3. Step 3: Cross multiply
   2,017.31x = 3,025.18 × 784.56
4. Step 4: Simplify right side
   2,017.31x = 2,373,435.22
5. Step 5: Solve for x
   x = 2,373,435.22/2,017.31
6. Step 6: Final answer
   x = 1,176.53