Finding the Fourth Proportional to 1,345.20, 1,855.43 and 1,300.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.20 : 1,855.43 = 1,300.04 : x
2. Step 2: Convert to fraction form
   1,345.20/1,855.43 = 1,300.04/x
3. Step 3: Cross multiply
   1,345.20x = 1,855.43 × 1,300.04
4. Step 4: Simplify right side
   1,345.20x = 2,412,133.22
5. Step 5: Solve for x
   x = 2,412,133.22/1,345.20
6. Step 6: Final answer
   x = 1,793.14