Finding the Fourth Proportional to 1,164.84, 1,745.22 and 615.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.84 : 1,745.22 = 615.72 : x
2. Step 2: Convert to fraction form
   1,164.84/1,745.22 = 615.72/x
3. Step 3: Cross multiply
   1,164.84x = 1,745.22 × 615.72
4. Step 4: Simplify right side
   1,164.84x = 1,074,566.86
5. Step 5: Solve for x
   x = 1,074,566.86/1,164.84
6. Step 6: Final answer
   x = 922.50