Finding the Fourth Proportional to 2,191.94, 3,024.87 and 1,307.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.94 : 3,024.87 = 1,307.78 : x
2. Step 2: Convert to fraction form
   2,191.94/3,024.87 = 1,307.78/x
3. Step 3: Cross multiply
   2,191.94x = 3,024.87 × 1,307.78
4. Step 4: Simplify right side
   2,191.94x = 3,955,864.49
5. Step 5: Solve for x
   x = 3,955,864.49/2,191.94
6. Step 6: Final answer
   x = 1,804.73