Finding the Fourth Proportional to 997.56, 1,485.98 and 942.84

Step by Step Solution

1. Step 1: Write the proportion equation
   997.56 : 1,485.98 = 942.84 : x
2. Step 2: Convert to fraction form
   997.56/1,485.98 = 942.84/x
3. Step 3: Cross multiply
   997.56x = 1,485.98 × 942.84
4. Step 4: Simplify right side
   997.56x = 1,401,041.38
5. Step 5: Solve for x
   x = 1,401,041.38/997.56
6. Step 6: Final answer
   x = 1,404.47