Finding the Fourth Proportional to 1,559.33, 2,151.88 and 851.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,559.33 : 2,151.88 = 851.18 : x
2. Step 2: Convert to fraction form
   1,559.33/2,151.88 = 851.18/x
3. Step 3: Cross multiply
   1,559.33x = 2,151.88 × 851.18
4. Step 4: Simplify right side
   1,559.33x = 1,831,637.22
5. Step 5: Solve for x
   x = 1,831,637.22/1,559.33
6. Step 6: Final answer
   x = 1,174.63