Finding the Fourth Proportional to 1,236.89, 1,854.72 and 506.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236.89 : 1,854.72 = 506.07 : x
2. Step 2: Convert to fraction form
   1,236.89/1,854.72 = 506.07/x
3. Step 3: Cross multiply
   1,236.89x = 1,854.72 × 506.07
4. Step 4: Simplify right side
   1,236.89x = 938,618.15
5. Step 5: Solve for x
   x = 938,618.15/1,236.89
6. Step 6: Final answer
   x = 758.86