Finding the Fourth Proportional to 1,603.83, 2,389.80 and 1,429.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.83 : 2,389.80 = 1,429.16 : x
2. Step 2: Convert to fraction form
   1,603.83/2,389.80 = 1,429.16/x
3. Step 3: Cross multiply
   1,603.83x = 2,389.80 × 1,429.16
4. Step 4: Simplify right side
   1,603.83x = 3,415,406.57
5. Step 5: Solve for x
   x = 3,415,406.57/1,603.83
6. Step 6: Final answer
   x = 2,129.53