Finding the Fourth Proportional to 1,171.57, 1,616.64 and 674.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.57 : 1,616.64 = 674.10 : x
2. Step 2: Convert to fraction form
   1,171.57/1,616.64 = 674.10/x
3. Step 3: Cross multiply
   1,171.57x = 1,616.64 × 674.10
4. Step 4: Simplify right side
   1,171.57x = 1,089,777.02
5. Step 5: Solve for x
   x = 1,089,777.02/1,171.57
6. Step 6: Final answer
   x = 930.19