Finding the Fourth Proportional to 1,871.08, 2,807.34 and 716.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.08 : 2,807.34 = 716.56 : x
2. Step 2: Convert to fraction form
   1,871.08/2,807.34 = 716.56/x
3. Step 3: Cross multiply
   1,871.08x = 2,807.34 × 716.56
4. Step 4: Simplify right side
   1,871.08x = 2,011,627.55
5. Step 5: Solve for x
   x = 2,011,627.55/1,871.08
6. Step 6: Final answer
   x = 1,075.12