Finding the Fourth Proportional to 2,051.28, 2,830.80 and 1,167.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,051.28 : 2,830.80 = 1,167.06 : x
2. Step 2: Convert to fraction form
   2,051.28/2,830.80 = 1,167.06/x
3. Step 3: Cross multiply
   2,051.28x = 2,830.80 × 1,167.06
4. Step 4: Simplify right side
   2,051.28x = 3,303,713.45
5. Step 5: Solve for x
   x = 3,303,713.45/2,051.28
6. Step 6: Final answer
   x = 1,610.56