Finding the Fourth Proportional to 3,623.20, 5,435.52 and 1,314.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,623.20 : 5,435.52 = 1,314.88 : x
2. Step 2: Convert to fraction form
   3,623.20/5,435.52 = 1,314.88/x
3. Step 3: Cross multiply
   3,623.20x = 5,435.52 × 1,314.88
4. Step 4: Simplify right side
   3,623.20x = 7,147,056.54
5. Step 5: Solve for x
   x = 7,147,056.54/3,623.20
6. Step 6: Final answer
   x = 1,972.58