Finding the Fourth Proportional to 2,300.95, 3,174.31 and 1,355.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.95 : 3,174.31 = 1,355.07 : x
2. Step 2: Convert to fraction form
   2,300.95/3,174.31 = 1,355.07/x
3. Step 3: Cross multiply
   2,300.95x = 3,174.31 × 1,355.07
4. Step 4: Simplify right side
   2,300.95x = 4,301,412.25
5. Step 5: Solve for x
   x = 4,301,412.25/2,300.95
6. Step 6: Final answer
   x = 1,869.41