Finding the Fourth Proportional to 1,728.99, 2,587.87 and 947.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728.99 : 2,587.87 = 947.02 : x
2. Step 2: Convert to fraction form
   1,728.99/2,587.87 = 947.02/x
3. Step 3: Cross multiply
   1,728.99x = 2,587.87 × 947.02
4. Step 4: Simplify right side
   1,728.99x = 2,450,766.38
5. Step 5: Solve for x
   x = 2,450,766.38/1,728.99
6. Step 6: Final answer
   x = 1,417.46