Finding the Fourth Proportional to 1,980.32, 2,969.24 and 1,158.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,980.32 : 2,969.24 = 1,158.17 : x
2. Step 2: Convert to fraction form
   1,980.32/2,969.24 = 1,158.17/x
3. Step 3: Cross multiply
   1,980.32x = 2,969.24 × 1,158.17
4. Step 4: Simplify right side
   1,980.32x = 3,438,864.05
5. Step 5: Solve for x
   x = 3,438,864.05/1,980.32
6. Step 6: Final answer
   x = 1,736.52