Finding the Fourth Proportional to 1,501.96, 2,072.69 and 838.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.96 : 2,072.69 = 838.81 : x
2. Step 2: Convert to fraction form
   1,501.96/2,072.69 = 838.81/x
3. Step 3: Cross multiply
   1,501.96x = 2,072.69 × 838.81
4. Step 4: Simplify right side
   1,501.96x = 1,738,590.01
5. Step 5: Solve for x
   x = 1,738,590.01/1,501.96
6. Step 6: Final answer
   x = 1,157.55