Finding the Fourth Proportional to 1,160.00, 1,600.80 and 636.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.00 : 1,600.80 = 636.03 : x
2. Step 2: Convert to fraction form
   1,160.00/1,600.80 = 636.03/x
3. Step 3: Cross multiply
   1,160.00x = 1,600.80 × 636.03
4. Step 4: Simplify right side
   1,160.00x = 1,018,156.82
5. Step 5: Solve for x
   x = 1,018,156.82/1,160.00
6. Step 6: Final answer
   x = 877.73