Finding the Fourth Proportional to 1,885.91, 2,601.79 and 1,186.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.91 : 2,601.79 = 1,186.88 : x
2. Step 2: Convert to fraction form
   1,885.91/2,601.79 = 1,186.88/x
3. Step 3: Cross multiply
   1,885.91x = 2,601.79 × 1,186.88
4. Step 4: Simplify right side
   1,885.91x = 3,087,996.54
5. Step 5: Solve for x
   x = 3,087,996.54/1,885.91
6. Step 6: Final answer
   x = 1,637.41