Finding the Fourth Proportional to 1,152.83, 1,724.72 and 890.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.83 : 1,724.72 = 890.84 : x
2. Step 2: Convert to fraction form
   1,152.83/1,724.72 = 890.84/x
3. Step 3: Cross multiply
   1,152.83x = 1,724.72 × 890.84
4. Step 4: Simplify right side
   1,152.83x = 1,536,436.49
5. Step 5: Solve for x
   x = 1,536,436.49/1,152.83
6. Step 6: Final answer
   x = 1,332.76