Finding the Fourth Proportional to 1,065.50, 1,476.10 and 1,039.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.50 : 1,476.10 = 1,039.99 : x
2. Step 2: Convert to fraction form
   1,065.50/1,476.10 = 1,039.99/x
3. Step 3: Cross multiply
   1,065.50x = 1,476.10 × 1,039.99
4. Step 4: Simplify right side
   1,065.50x = 1,535,126.69
5. Step 5: Solve for x
   x = 1,535,126.69/1,065.50
6. Step 6: Final answer
   x = 1,440.75