Finding the Fourth Proportional to 1,137.30, 1,570.41 and 806.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.30 : 1,570.41 = 806.10 : x
2. Step 2: Convert to fraction form
   1,137.30/1,570.41 = 806.10/x
3. Step 3: Cross multiply
   1,137.30x = 1,570.41 × 806.10
4. Step 4: Simplify right side
   1,137.30x = 1,265,907.50
5. Step 5: Solve for x
   x = 1,265,907.50/1,137.30
6. Step 6: Final answer
   x = 1,113.08