Finding the Fourth Proportional to 1,945.98, 2,919.59 and 713.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.98 : 2,919.59 = 713.78 : x
2. Step 2: Convert to fraction form
   1,945.98/2,919.59 = 713.78/x
3. Step 3: Cross multiply
   1,945.98x = 2,919.59 × 713.78
4. Step 4: Simplify right side
   1,945.98x = 2,083,926.78
5. Step 5: Solve for x
   x = 2,083,926.78/1,945.98
6. Step 6: Final answer
   x = 1,070.89