Finding the Fourth Proportional to 1,345.57, 1,855.59 and 873.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.57 : 1,855.59 = 873.29 : x
2. Step 2: Convert to fraction form
   1,345.57/1,855.59 = 873.29/x
3. Step 3: Cross multiply
   1,345.57x = 1,855.59 × 873.29
4. Step 4: Simplify right side
   1,345.57x = 1,620,468.19
5. Step 5: Solve for x
   x = 1,620,468.19/1,345.57
6. Step 6: Final answer
   x = 1,204.30