Finding the Fourth Proportional to 2,771.91, 4,156.63 and 1,039.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,771.91 : 4,156.63 = 1,039.32 : x
2. Step 2: Convert to fraction form
   2,771.91/4,156.63 = 1,039.32/x
3. Step 3: Cross multiply
   2,771.91x = 4,156.63 × 1,039.32
4. Step 4: Simplify right side
   2,771.91x = 4,320,068.69
5. Step 5: Solve for x
   x = 4,320,068.69/2,771.91
6. Step 6: Final answer
   x = 1,558.52