Finding the Fourth Proportional to 1,327.60, 1,834.72 and 997.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,327.60 : 1,834.72 = 997.12 : x
2. Step 2: Convert to fraction form
   1,327.60/1,834.72 = 997.12/x
3. Step 3: Cross multiply
   1,327.60x = 1,834.72 × 997.12
4. Step 4: Simplify right side
   1,327.60x = 1,829,436.01
5. Step 5: Solve for x
   x = 1,829,436.01/1,327.60
6. Step 6: Final answer
   x = 1,378.00