Finding the Fourth Proportional to 1,928.16, 2,661.12 and 1,182.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,928.16 : 2,661.12 = 1,182.15 : x
2. Step 2: Convert to fraction form
   1,928.16/2,661.12 = 1,182.15/x
3. Step 3: Cross multiply
   1,928.16x = 2,661.12 × 1,182.15
4. Step 4: Simplify right side
   1,928.16x = 3,145,843.01
5. Step 5: Solve for x
   x = 3,145,843.01/1,928.16
6. Step 6: Final answer
   x = 1,631.53