Finding the Fourth Proportional to 1,512.37, 2,087.15 and 849.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,512.37 : 2,087.15 = 849.31 : x
2. Step 2: Convert to fraction form
   1,512.37/2,087.15 = 849.31/x
3. Step 3: Cross multiply
   1,512.37x = 2,087.15 × 849.31
4. Step 4: Simplify right side
   1,512.37x = 1,772,638.34
5. Step 5: Solve for x
   x = 1,772,638.34/1,512.37
6. Step 6: Final answer
   x = 1,172.10