Finding the Fourth Proportional to 1,345.73, 2,019.18 and 729.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.73 : 2,019.18 = 729.87 : x
2. Step 2: Convert to fraction form
   1,345.73/2,019.18 = 729.87/x
3. Step 3: Cross multiply
   1,345.73x = 2,019.18 × 729.87
4. Step 4: Simplify right side
   1,345.73x = 1,473,738.91
5. Step 5: Solve for x
   x = 1,473,738.91/1,345.73
6. Step 6: Final answer
   x = 1,095.12