Finding the Fourth Proportional to 1,736.34, 2,605.32 and 870.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,736.34 : 2,605.32 = 870.54 : x
2. Step 2: Convert to fraction form
   1,736.34/2,605.32 = 870.54/x
3. Step 3: Cross multiply
   1,736.34x = 2,605.32 × 870.54
4. Step 4: Simplify right side
   1,736.34x = 2,268,035.27
5. Step 5: Solve for x
   x = 2,268,035.27/1,736.34
6. Step 6: Final answer
   x = 1,306.22