Finding the Fourth Proportional to 1,165.04, 1,607.72 and 633.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,165.04 : 1,607.72 = 633.91 : x
2. Step 2: Convert to fraction form
   1,165.04/1,607.72 = 633.91/x
3. Step 3: Cross multiply
   1,165.04x = 1,607.72 × 633.91
4. Step 4: Simplify right side
   1,165.04x = 1,019,146.62
5. Step 5: Solve for x
   x = 1,019,146.62/1,165.04
6. Step 6: Final answer
   x = 874.78