Finding the Fourth Proportional to 1,618.74, 2,233.98 and 920.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618.74 : 2,233.98 = 920.52 : x
2. Step 2: Convert to fraction form
   1,618.74/2,233.98 = 920.52/x
3. Step 3: Cross multiply
   1,618.74x = 2,233.98 × 920.52
4. Step 4: Simplify right side
   1,618.74x = 2,056,423.27
5. Step 5: Solve for x
   x = 2,056,423.27/1,618.74
6. Step 6: Final answer
   x = 1,270.39