Finding the Fourth Proportional to 1,284.67, 1,925.38 and 1,070.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284.67 : 1,925.38 = 1,070.83 : x
2. Step 2: Convert to fraction form
   1,284.67/1,925.38 = 1,070.83/x
3. Step 3: Cross multiply
   1,284.67x = 1,925.38 × 1,070.83
4. Step 4: Simplify right side
   1,284.67x = 2,061,739.68
5. Step 5: Solve for x
   x = 2,061,739.68/1,284.67
6. Step 6: Final answer
   x = 1,604.89