Finding the Fourth Proportional to 2,319.21, 3,200.37 and 1,375.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,319.21 : 3,200.37 = 1,375.09 : x
2. Step 2: Convert to fraction form
   2,319.21/3,200.37 = 1,375.09/x
3. Step 3: Cross multiply
   2,319.21x = 3,200.37 × 1,375.09
4. Step 4: Simplify right side
   2,319.21x = 4,400,773.91
5. Step 5: Solve for x
   x = 4,400,773.91/2,319.21
6. Step 6: Final answer
   x = 1,897.54