Finding the Fourth Proportional to 1,160.01, 1,600.86 and 636.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.01 : 1,600.86 = 636.06 : x
2. Step 2: Convert to fraction form
   1,160.01/1,600.86 = 636.06/x
3. Step 3: Cross multiply
   1,160.01x = 1,600.86 × 636.06
4. Step 4: Simplify right side
   1,160.01x = 1,018,243.01
5. Step 5: Solve for x
   x = 1,018,243.01/1,160.01
6. Step 6: Final answer
   x = 877.79