Finding the Fourth Proportional to 1,903.68, 2,628.72 and 1,437.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,903.68 : 2,628.72 = 1,437.12 : x
2. Step 2: Convert to fraction form
   1,903.68/2,628.72 = 1,437.12/x
3. Step 3: Cross multiply
   1,903.68x = 2,628.72 × 1,437.12
4. Step 4: Simplify right side
   1,903.68x = 3,777,786.09
5. Step 5: Solve for x
   x = 3,777,786.09/1,903.68
6. Step 6: Final answer
   x = 1,984.46