Finding the Fourth Proportional to 1,158.06, 1,743.35 and 1,057.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.06 : 1,743.35 = 1,057.62 : x
2. Step 2: Convert to fraction form
   1,158.06/1,743.35 = 1,057.62/x
3. Step 3: Cross multiply
   1,158.06x = 1,743.35 × 1,057.62
4. Step 4: Simplify right side
   1,158.06x = 1,843,796.54
5. Step 5: Solve for x
   x = 1,843,796.54/1,158.06
6. Step 6: Final answer
   x = 1,592.14