Finding the Fourth Proportional to 1,879.05, 2,592.72 and 1,071.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,879.05 : 2,592.72 = 1,071.39 : x
2. Step 2: Convert to fraction form
   1,879.05/2,592.72 = 1,071.39/x
3. Step 3: Cross multiply
   1,879.05x = 2,592.72 × 1,071.39
4. Step 4: Simplify right side
   1,879.05x = 2,777,814.28
5. Step 5: Solve for x
   x = 2,777,814.28/1,879.05
6. Step 6: Final answer
   x = 1,478.31