Finding the Fourth Proportional to 1,943.90, 2,916.71 and 711.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,943.90 : 2,916.71 = 711.50 : x
2. Step 2: Convert to fraction form
   1,943.90/2,916.71 = 711.50/x
3. Step 3: Cross multiply
   1,943.90x = 2,916.71 × 711.50
4. Step 4: Simplify right side
   1,943.90x = 2,075,227.79
5. Step 5: Solve for x
   x = 2,075,227.79/1,943.90
6. Step 6: Final answer
   x = 1,067.56