Finding the Fourth Proportional to 1,513.76, 2,089.03 and 850.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.76 : 2,089.03 = 850.63 : x
2. Step 2: Convert to fraction form
   1,513.76/2,089.03 = 850.63/x
3. Step 3: Cross multiply
   1,513.76x = 2,089.03 × 850.63
4. Step 4: Simplify right side
   1,513.76x = 1,776,991.59
5. Step 5: Solve for x
   x = 1,776,991.59/1,513.76
6. Step 6: Final answer
   x = 1,173.89