Finding the Fourth Proportional to 1,164.72, 1,607.32 and 633.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.72 : 1,607.32 = 633.61 : x
2. Step 2: Convert to fraction form
   1,164.72/1,607.32 = 633.61/x
3. Step 3: Cross multiply
   1,164.72x = 1,607.32 × 633.61
4. Step 4: Simplify right side
   1,164.72x = 1,018,406.78
5. Step 5: Solve for x
   x = 1,018,406.78/1,164.72
6. Step 6: Final answer
   x = 874.38