Finding the Fourth Proportional to 1,372.98, 2,059.72 and 788.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.98 : 2,059.72 = 788.62 : x
2. Step 2: Convert to fraction form
   1,372.98/2,059.72 = 788.62/x
3. Step 3: Cross multiply
   1,372.98x = 2,059.72 × 788.62
4. Step 4: Simplify right side
   1,372.98x = 1,624,336.39
5. Step 5: Solve for x
   x = 1,624,336.39/1,372.98
6. Step 6: Final answer
   x = 1,183.07