Finding the Fourth Proportional to 1,372.50, 1,891.82 and 1,073.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.50 : 1,891.82 = 1,073.21 : x
2. Step 2: Convert to fraction form
   1,372.50/1,891.82 = 1,073.21/x
3. Step 3: Cross multiply
   1,372.50x = 1,891.82 × 1,073.21
4. Step 4: Simplify right side
   1,372.50x = 2,030,313.37
5. Step 5: Solve for x
   x = 2,030,313.37/1,372.50
6. Step 6: Final answer
   x = 1,479.28