Finding the Fourth Proportional to 1,539.82, 2,309.91 and 1,192.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,539.82 : 2,309.91 = 1,192.69 : x
2. Step 2: Convert to fraction form
   1,539.82/2,309.91 = 1,192.69/x
3. Step 3: Cross multiply
   1,539.82x = 2,309.91 × 1,192.69
4. Step 4: Simplify right side
   1,539.82x = 2,755,006.56
5. Step 5: Solve for x
   x = 2,755,006.56/1,539.82
6. Step 6: Final answer
   x = 1,789.17