Finding the Fourth Proportional to 1,345.88, 2,019.62 and 729.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.88 : 2,019.62 = 729.57 : x
2. Step 2: Convert to fraction form
   1,345.88/2,019.62 = 729.57/x
3. Step 3: Cross multiply
   1,345.88x = 2,019.62 × 729.57
4. Step 4: Simplify right side
   1,345.88x = 1,473,450.52
5. Step 5: Solve for x
   x = 1,473,450.52/1,345.88
6. Step 6: Final answer
   x = 1,094.79