Finding the Fourth Proportional to 1,047.58, 1,445.50 and 605.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.58 : 1,445.50 = 605.50 : x
2. Step 2: Convert to fraction form
   1,047.58/1,445.50 = 605.50/x
3. Step 3: Cross multiply
   1,047.58x = 1,445.50 × 605.50
4. Step 4: Simplify right side
   1,047.58x = 875,250.25
5. Step 5: Solve for x
   x = 875,250.25/1,047.58
6. Step 6: Final answer
   x = 835.50