Finding the Fourth Proportional to 1,513.76, 2,268.52 and 818.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.76 : 2,268.52 = 818.94 : x
2. Step 2: Convert to fraction form
   1,513.76/2,268.52 = 818.94/x
3. Step 3: Cross multiply
   1,513.76x = 2,268.52 × 818.94
4. Step 4: Simplify right side
   1,513.76x = 1,857,781.77
5. Step 5: Solve for x
   x = 1,857,781.77/1,513.76
6. Step 6: Final answer
   x = 1,227.26