Finding the Fourth Proportional to 1,189.32, 1,776.72 and 1,146.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189.32 : 1,776.72 = 1,146.12 : x
2. Step 2: Convert to fraction form
   1,189.32/1,776.72 = 1,146.12/x
3. Step 3: Cross multiply
   1,189.32x = 1,776.72 × 1,146.12
4. Step 4: Simplify right side
   1,189.32x = 2,036,334.33
5. Step 5: Solve for x
   x = 2,036,334.33/1,189.32
6. Step 6: Final answer
   x = 1,712.18