Finding the Fourth Proportional to 2,284.80, 3,152.76 and 1,290.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,284.80 : 3,152.76 = 1,290.02 : x
2. Step 2: Convert to fraction form
   2,284.80/3,152.76 = 1,290.02/x
3. Step 3: Cross multiply
   2,284.80x = 3,152.76 × 1,290.02
4. Step 4: Simplify right side
   2,284.80x = 4,067,123.46
5. Step 5: Solve for x
   x = 4,067,123.46/2,284.80
6. Step 6: Final answer
   x = 1,780.08