Finding the Fourth Proportional to 1,087.01, 1,501.99 and 851.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.01 : 1,501.99 = 851.60 : x
2. Step 2: Convert to fraction form
   1,087.01/1,501.99 = 851.60/x
3. Step 3: Cross multiply
   1,087.01x = 1,501.99 × 851.60
4. Step 4: Simplify right side
   1,087.01x = 1,279,085.05
5. Step 5: Solve for x
   x = 1,279,085.05/1,087.01
6. Step 6: Final answer
   x = 1,176.71