Finding the Fourth Proportional to 1,005.50, 1,505.94 and 730.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,005.50 : 1,505.94 = 730.91 : x
2. Step 2: Convert to fraction form
   1,005.50/1,505.94 = 730.91/x
3. Step 3: Cross multiply
   1,005.50x = 1,505.94 × 730.91
4. Step 4: Simplify right side
   1,005.50x = 1,100,699.08
5. Step 5: Solve for x
   x = 1,100,699.08/1,005.50
6. Step 6: Final answer
   x = 1,094.68