Finding the Fourth Proportional to 1,443.50, 1,992.78 and 1,357.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.50 : 1,992.78 = 1,357.10 : x
2. Step 2: Convert to fraction form
   1,443.50/1,992.78 = 1,357.10/x
3. Step 3: Cross multiply
   1,443.50x = 1,992.78 × 1,357.10
4. Step 4: Simplify right side
   1,443.50x = 2,704,401.74
5. Step 5: Solve for x
   x = 2,704,401.74/1,443.50
6. Step 6: Final answer
   x = 1,873.50