Finding the Fourth Proportional to 1,774.76, 2,658.59 and 1,071.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,774.76 : 2,658.59 = 1,071.56 : x
2. Step 2: Convert to fraction form
   1,774.76/2,658.59 = 1,071.56/x
3. Step 3: Cross multiply
   1,774.76x = 2,658.59 × 1,071.56
4. Step 4: Simplify right side
   1,774.76x = 2,848,844.01
5. Step 5: Solve for x
   x = 2,848,844.01/1,774.76
6. Step 6: Final answer
   x = 1,605.20