Finding the Fourth Proportional to 2,803.10, 4,204.56 and 1,158.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,803.10 : 4,204.56 = 1,158.40 : x
2. Step 2: Convert to fraction form
   2,803.10/4,204.56 = 1,158.40/x
3. Step 3: Cross multiply
   2,803.10x = 4,204.56 × 1,158.40
4. Step 4: Simplify right side
   2,803.10x = 4,870,562.30
5. Step 5: Solve for x
   x = 4,870,562.30/2,803.10
6. Step 6: Final answer
   x = 1,737.56