Finding the Fourth Proportional to 1,771.02, 2,655.51 and 674.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,771.02 : 2,655.51 = 674.78 : x
2. Step 2: Convert to fraction form
   1,771.02/2,655.51 = 674.78/x
3. Step 3: Cross multiply
   1,771.02x = 2,655.51 × 674.78
4. Step 4: Simplify right side
   1,771.02x = 1,791,885.04
5. Step 5: Solve for x
   x = 1,791,885.04/1,771.02
6. Step 6: Final answer
   x = 1,011.78