Finding the Fourth Proportional to 2,299.74, 3,173.52 and 1,355.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,299.74 : 3,173.52 = 1,355.57 : x
2. Step 2: Convert to fraction form
   2,299.74/3,173.52 = 1,355.57/x
3. Step 3: Cross multiply
   2,299.74x = 3,173.52 × 1,355.57
4. Step 4: Simplify right side
   2,299.74x = 4,301,928.51
5. Step 5: Solve for x
   x = 4,301,928.51/2,299.74
6. Step 6: Final answer
   x = 1,870.62