Finding the Fourth Proportional to 1,501.72, 2,072.38 and 838.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.72 : 2,072.38 = 838.46 : x
2. Step 2: Convert to fraction form
   1,501.72/2,072.38 = 838.46/x
3. Step 3: Cross multiply
   1,501.72x = 2,072.38 × 838.46
4. Step 4: Simplify right side
   1,501.72x = 1,737,607.73
5. Step 5: Solve for x
   x = 1,737,607.73/1,501.72
6. Step 6: Final answer
   x = 1,157.08