Finding the Fourth Proportional to 1,347.69, 1,859.73 and 816.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.69 : 1,859.73 = 816.69 : x
2. Step 2: Convert to fraction form
   1,347.69/1,859.73 = 816.69/x
3. Step 3: Cross multiply
   1,347.69x = 1,859.73 × 816.69
4. Step 4: Simplify right side
   1,347.69x = 1,518,822.89
5. Step 5: Solve for x
   x = 1,518,822.89/1,347.69
6. Step 6: Final answer
   x = 1,126.98