Finding the Fourth Proportional to 3,604.56, 5,407.80 and 1,296.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,604.56 : 5,407.80 = 1,296.72 : x
2. Step 2: Convert to fraction form
   3,604.56/5,407.80 = 1,296.72/x
3. Step 3: Cross multiply
   3,604.56x = 5,407.80 × 1,296.72
4. Step 4: Simplify right side
   3,604.56x = 7,012,402.42
5. Step 5: Solve for x
   x = 7,012,402.42/3,604.56
6. Step 6: Final answer
   x = 1,945.43