Finding the Fourth Proportional to 1,166.37, 1,744.20 and 870.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,166.37 : 1,744.20 = 870.42 : x
2. Step 2: Convert to fraction form
   1,166.37/1,744.20 = 870.42/x
3. Step 3: Cross multiply
   1,166.37x = 1,744.20 × 870.42
4. Step 4: Simplify right side
   1,166.37x = 1,518,186.56
5. Step 5: Solve for x
   x = 1,518,186.56/1,166.37
6. Step 6: Final answer
   x = 1,301.63