Finding the Fourth Proportional to 1,186.72, 1,637.67 and 655.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186.72 : 1,637.67 = 655.59 : x
2. Step 2: Convert to fraction form
   1,186.72/1,637.67 = 655.59/x
3. Step 3: Cross multiply
   1,186.72x = 1,637.67 × 655.59
4. Step 4: Simplify right side
   1,186.72x = 1,073,631.89
5. Step 5: Solve for x
   x = 1,073,631.89/1,186.72
6. Step 6: Final answer
   x = 904.71