Finding the Fourth Proportional to 1,776.72, 2,451.69 and 1,186.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.72 : 2,451.69 = 1,186.23 : x
2. Step 2: Convert to fraction form
   1,776.72/2,451.69 = 1,186.23/x
3. Step 3: Cross multiply
   1,776.72x = 2,451.69 × 1,186.23
4. Step 4: Simplify right side
   1,776.72x = 2,908,268.23
5. Step 5: Solve for x
   x = 2,908,268.23/1,776.72
6. Step 6: Final answer
   x = 1,636.87