Finding the Fourth Proportional to 1,300.84, 1,791.50 and 1,296.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.84 : 1,791.50 = 1,296.78 : x
2. Step 2: Convert to fraction form
   1,300.84/1,791.50 = 1,296.78/x
3. Step 3: Cross multiply
   1,300.84x = 1,791.50 × 1,296.78
4. Step 4: Simplify right side
   1,300.84x = 2,323,181.37
5. Step 5: Solve for x
   x = 2,323,181.37/1,300.84
6. Step 6: Final answer
   x = 1,785.91