Finding the Fourth Proportional to 1,513.49, 2,088.69 and 850.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.49 : 2,088.69 = 850.30 : x
2. Step 2: Convert to fraction form
   1,513.49/2,088.69 = 850.30/x
3. Step 3: Cross multiply
   1,513.49x = 2,088.69 × 850.30
4. Step 4: Simplify right side
   1,513.49x = 1,776,004.70
5. Step 5: Solve for x
   x = 1,776,004.70/1,513.49
6. Step 6: Final answer
   x = 1,173.45