Finding the Fourth Proportional to 2,030.64, 2,800.80 and 1,284.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,030.64 : 2,800.80 = 1,284.72 : x
2. Step 2: Convert to fraction form
   2,030.64/2,800.80 = 1,284.72/x
3. Step 3: Cross multiply
   2,030.64x = 2,800.80 × 1,284.72
4. Step 4: Simplify right side
   2,030.64x = 3,598,243.78
5. Step 5: Solve for x
   x = 3,598,243.78/2,030.64
6. Step 6: Final answer
   x = 1,771.98