Finding the Fourth Proportional to 1,077.07, 1,486.38 and 1,039.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077.07 : 1,486.38 = 1,039.83 : x
2. Step 2: Convert to fraction form
   1,077.07/1,486.38 = 1,039.83/x
3. Step 3: Cross multiply
   1,077.07x = 1,486.38 × 1,039.83
4. Step 4: Simplify right side
   1,077.07x = 1,545,582.52
5. Step 5: Solve for x
   x = 1,545,582.52/1,077.07
6. Step 6: Final answer
   x = 1,434.99