Finding the Fourth Proportional to 1,903.59, 2,626.29 and 1,157.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,903.59 : 2,626.29 = 1,157.31 : x
2. Step 2: Convert to fraction form
   1,903.59/2,626.29 = 1,157.31/x
3. Step 3: Cross multiply
   1,903.59x = 2,626.29 × 1,157.31
4. Step 4: Simplify right side
   1,903.59x = 3,039,431.68
5. Step 5: Solve for x
   x = 3,039,431.68/1,903.59
6. Step 6: Final answer
   x = 1,596.68