Finding the Fourth Proportional to 1,162.53, 1,742.49 and 613.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.53 : 1,742.49 = 613.53 : x
2. Step 2: Convert to fraction form
   1,162.53/1,742.49 = 613.53/x
3. Step 3: Cross multiply
   1,162.53x = 1,742.49 × 613.53
4. Step 4: Simplify right side
   1,162.53x = 1,069,069.89
5. Step 5: Solve for x
   x = 1,069,069.89/1,162.53
6. Step 6: Final answer
   x = 919.61