Finding the Fourth Proportional to 2,039.30, 2,814.24 and 1,200.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.30 : 2,814.24 = 1,200.03 : x
2. Step 2: Convert to fraction form
   2,039.30/2,814.24 = 1,200.03/x
3. Step 3: Cross multiply
   2,039.30x = 2,814.24 × 1,200.03
4. Step 4: Simplify right side
   2,039.30x = 3,377,172.43
5. Step 5: Solve for x
   x = 3,377,172.43/2,039.30
6. Step 6: Final answer
   x = 1,656.05