Finding the Fourth Proportional to 1,501.59, 2,072.18 and 838.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.59 : 2,072.18 = 838.45 : x
2. Step 2: Convert to fraction form
   1,501.59/2,072.18 = 838.45/x
3. Step 3: Cross multiply
   1,501.59x = 2,072.18 × 838.45
4. Step 4: Simplify right side
   1,501.59x = 1,737,419.32
5. Step 5: Solve for x
   x = 1,737,419.32/1,501.59
6. Step 6: Final answer
   x = 1,157.05