Finding the Fourth Proportional to 2,265.79, 3,396.59 and 1,572.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,265.79 : 3,396.59 = 1,572.78 : x
2. Step 2: Convert to fraction form
   2,265.79/3,396.59 = 1,572.78/x
3. Step 3: Cross multiply
   2,265.79x = 3,396.59 × 1,572.78
4. Step 4: Simplify right side
   2,265.79x = 5,342,088.82
5. Step 5: Solve for x
   x = 5,342,088.82/2,265.79
6. Step 6: Final answer
   x = 2,357.72