Finding the Fourth Proportional to 1,918.18, 2,871.80 and 1,300.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918.18 : 2,871.80 = 1,300.56 : x
2. Step 2: Convert to fraction form
   1,918.18/2,871.80 = 1,300.56/x
3. Step 3: Cross multiply
   1,918.18x = 2,871.80 × 1,300.56
4. Step 4: Simplify right side
   1,918.18x = 3,734,933.85
5. Step 5: Solve for x
   x = 3,734,933.85/1,918.18
6. Step 6: Final answer
   x = 1,947.12