Finding the Fourth Proportional to 1,076.59, 1,485.71 and 610.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.59 : 1,485.71 = 610.75 : x
2. Step 2: Convert to fraction form
   1,076.59/1,485.71 = 610.75/x
3. Step 3: Cross multiply
   1,076.59x = 1,485.71 × 610.75
4. Step 4: Simplify right side
   1,076.59x = 907,397.38
5. Step 5: Solve for x
   x = 907,397.38/1,076.59
6. Step 6: Final answer
   x = 842.84