Finding the Fourth Proportional to 1,093.59, 1,641.31 and 477.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.59 : 1,641.31 = 477.79 : x
2. Step 2: Convert to fraction form
   1,093.59/1,641.31 = 477.79/x
3. Step 3: Cross multiply
   1,093.59x = 1,641.31 × 477.79
4. Step 4: Simplify right side
   1,093.59x = 784,196.21
5. Step 5: Solve for x
   x = 784,196.21/1,093.59
6. Step 6: Final answer
   x = 717.08