Finding the Fourth Proportional to 1,319.34, 1,820.72 and 729.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,319.34 : 1,820.72 = 729.93 : x
2. Step 2: Convert to fraction form
   1,319.34/1,820.72 = 729.93/x
3. Step 3: Cross multiply
   1,319.34x = 1,820.72 × 729.93
4. Step 4: Simplify right side
   1,319.34x = 1,328,994.50
5. Step 5: Solve for x
   x = 1,328,994.50/1,319.34
6. Step 6: Final answer
   x = 1,007.32