Finding the Fourth Proportional to 1,093.30, 1,507.71 and 844.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.30 : 1,507.71 = 844.21 : x
2. Step 2: Convert to fraction form
   1,093.30/1,507.71 = 844.21/x
3. Step 3: Cross multiply
   1,093.30x = 1,507.71 × 844.21
4. Step 4: Simplify right side
   1,093.30x = 1,272,823.86
5. Step 5: Solve for x
   x = 1,272,823.86/1,093.30
6. Step 6: Final answer
   x = 1,164.20