Finding the Fourth Proportional to 1,815.64, 2,504.71 and 1,151.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,815.64 : 2,504.71 = 1,151.33 : x
2. Step 2: Convert to fraction form
   1,815.64/2,504.71 = 1,151.33/x
3. Step 3: Cross multiply
   1,815.64x = 2,504.71 × 1,151.33
4. Step 4: Simplify right side
   1,815.64x = 2,883,751.15
5. Step 5: Solve for x
   x = 2,883,751.15/1,815.64
6. Step 6: Final answer
   x = 1,588.29