Finding the Fourth Proportional to 1,945.50, 2,917.38 and 558.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.50 : 2,917.38 = 558.52 : x
2. Step 2: Convert to fraction form
   1,945.50/2,917.38 = 558.52/x
3. Step 3: Cross multiply
   1,945.50x = 2,917.38 × 558.52
4. Step 4: Simplify right side
   1,945.50x = 1,629,409.88
5. Step 5: Solve for x
   x = 1,629,409.88/1,945.50
6. Step 6: Final answer
   x = 837.53