Finding the Fourth Proportional to 1,137.50, 1,570.79 and 1,076.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.50 : 1,570.79 = 1,076.12 : x
2. Step 2: Convert to fraction form
   1,137.50/1,570.79 = 1,076.12/x
3. Step 3: Cross multiply
   1,137.50x = 1,570.79 × 1,076.12
4. Step 4: Simplify right side
   1,137.50x = 1,690,353.37
5. Step 5: Solve for x
   x = 1,690,353.37/1,137.50
6. Step 6: Final answer
   x = 1,486.03