Finding the Fourth Proportional to 1,513.62, 2,088.79 and 850.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.62 : 2,088.79 = 850.47 : x
2. Step 2: Convert to fraction form
   1,513.62/2,088.79 = 850.47/x
3. Step 3: Cross multiply
   1,513.62x = 2,088.79 × 850.47
4. Step 4: Simplify right side
   1,513.62x = 1,776,453.23
5. Step 5: Solve for x
   x = 1,776,453.23/1,513.62
6. Step 6: Final answer
   x = 1,173.65