Finding the Fourth Proportional to 2,858.58, 4,288.59 and 1,127.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,858.58 : 4,288.59 = 1,127.34 : x
2. Step 2: Convert to fraction form
   2,858.58/4,288.59 = 1,127.34/x
3. Step 3: Cross multiply
   2,858.58x = 4,288.59 × 1,127.34
4. Step 4: Simplify right side
   2,858.58x = 4,834,699.05
5. Step 5: Solve for x
   x = 4,834,699.05/2,858.58
6. Step 6: Final answer
   x = 1,691.29