Finding the Fourth Proportional to 990.72, 1,482.86 and 730.62

Step by Step Solution

1. Step 1: Write the proportion equation
   990.72 : 1,482.86 = 730.62 : x
2. Step 2: Convert to fraction form
   990.72/1,482.86 = 730.62/x
3. Step 3: Cross multiply
   990.72x = 1,482.86 × 730.62
4. Step 4: Simplify right side
   990.72x = 1,083,403.52
5. Step 5: Solve for x
   x = 1,083,403.52/990.72
6. Step 6: Final answer
   x = 1,093.55