Finding the Fourth Proportional to 1,535.56, 2,119.06 and 872.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,535.56 : 2,119.06 = 872.47 : x
2. Step 2: Convert to fraction form
   1,535.56/2,119.06 = 872.47/x
3. Step 3: Cross multiply
   1,535.56x = 2,119.06 × 872.47
4. Step 4: Simplify right side
   1,535.56x = 1,848,820.02
5. Step 5: Solve for x
   x = 1,848,820.02/1,535.56
6. Step 6: Final answer
   x = 1,204.01