Finding the Fourth Proportional to 1,501.74, 2,072.52 and 872.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.74 : 2,072.52 = 872.34 : x
2. Step 2: Convert to fraction form
   1,501.74/2,072.52 = 872.34/x
3. Step 3: Cross multiply
   1,501.74x = 2,072.52 × 872.34
4. Step 4: Simplify right side
   1,501.74x = 1,807,942.10
5. Step 5: Solve for x
   x = 1,807,942.10/1,501.74
6. Step 6: Final answer
   x = 1,203.90