Finding the Fourth Proportional to 1,603.51, 2,210.69 and 1,439.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.51 : 2,210.69 = 1,439.48 : x
2. Step 2: Convert to fraction form
   1,603.51/2,210.69 = 1,439.48/x
3. Step 3: Cross multiply
   1,603.51x = 2,210.69 × 1,439.48
4. Step 4: Simplify right side
   1,603.51x = 3,182,253.17
5. Step 5: Solve for x
   x = 3,182,253.17/1,603.51
6. Step 6: Final answer
   x = 1,984.56