Finding the Fourth Proportional to 1,513.68, 2,088.98 and 850.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.68 : 2,088.98 = 850.57 : x
2. Step 2: Convert to fraction form
   1,513.68/2,088.98 = 850.57/x
3. Step 3: Cross multiply
   1,513.68x = 2,088.98 × 850.57
4. Step 4: Simplify right side
   1,513.68x = 1,776,823.72
5. Step 5: Solve for x
   x = 1,776,823.72/1,513.68
6. Step 6: Final answer
   x = 1,173.84