Finding the Fourth Proportional to 1,369.15, 1,890.32 and 1,053.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.15 : 1,890.32 = 1,053.83 : x
2. Step 2: Convert to fraction form
   1,369.15/1,890.32 = 1,053.83/x
3. Step 3: Cross multiply
   1,369.15x = 1,890.32 × 1,053.83
4. Step 4: Simplify right side
   1,369.15x = 1,992,070.68
5. Step 5: Solve for x
   x = 1,992,070.68/1,369.15
6. Step 6: Final answer
   x = 1,454.97