Finding the Fourth Proportional to 1,406.99, 1,941.50 and 817.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.99 : 1,941.50 = 817.47 : x
2. Step 2: Convert to fraction form
   1,406.99/1,941.50 = 817.47/x
3. Step 3: Cross multiply
   1,406.99x = 1,941.50 × 817.47
4. Step 4: Simplify right side
   1,406.99x = 1,587,113.92
5. Step 5: Solve for x
   x = 1,587,113.92/1,406.99
6. Step 6: Final answer
   x = 1,128.02