Finding the Fourth Proportional to 2,590.67, 3,885.39 and 946.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.67 : 3,885.39 = 946.77 : x
2. Step 2: Convert to fraction form
   2,590.67/3,885.39 = 946.77/x
3. Step 3: Cross multiply
   2,590.67x = 3,885.39 × 946.77
4. Step 4: Simplify right side
   2,590.67x = 3,678,570.69
5. Step 5: Solve for x
   x = 3,678,570.69/2,590.67
6. Step 6: Final answer
   x = 1,419.93