Finding the Fourth Proportional to 2,072.51, 2,860.00 and 1,128.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.51 : 2,860.00 = 1,128.29 : x
2. Step 2: Convert to fraction form
   2,072.51/2,860.00 = 1,128.29/x
3. Step 3: Cross multiply
   2,072.51x = 2,860.00 × 1,128.29
4. Step 4: Simplify right side
   2,072.51x = 3,226,903.00
5. Step 5: Solve for x
   x = 3,226,903.00/2,072.51
6. Step 6: Final answer
   x = 1,557.00