Finding the Fourth Proportional to 2,041.78, 2,817.61 and 1,157.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,041.78 : 2,817.61 = 1,157.59 : x
2. Step 2: Convert to fraction form
   2,041.78/2,817.61 = 1,157.59/x
3. Step 3: Cross multiply
   2,041.78x = 2,817.61 × 1,157.59
4. Step 4: Simplify right side
   2,041.78x = 3,261,637.16
5. Step 5: Solve for x
   x = 3,261,637.16/2,041.78
6. Step 6: Final answer
   x = 1,597.45