Finding the Fourth Proportional to 2,300.05, 3,173.12 and 1,355.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.05 : 3,173.12 = 1,355.99 : x
2. Step 2: Convert to fraction form
   2,300.05/3,173.12 = 1,355.99/x
3. Step 3: Cross multiply
   2,300.05x = 3,173.12 × 1,355.99
4. Step 4: Simplify right side
   2,300.05x = 4,302,726.90
5. Step 5: Solve for x
   x = 4,302,726.90/2,300.05
6. Step 6: Final answer
   x = 1,870.71