Finding the Fourth Proportional to 1,133.42, 1,700.78 and 613.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,133.42 : 1,700.78 = 613.43 : x
2. Step 2: Convert to fraction form
   1,133.42/1,700.78 = 613.43/x
3. Step 3: Cross multiply
   1,133.42x = 1,700.78 × 613.43
4. Step 4: Simplify right side
   1,133.42x = 1,043,297.90
5. Step 5: Solve for x
   x = 1,043,297.90/1,133.42
6. Step 6: Final answer
   x = 920.49