Finding the Fourth Proportional to 1,501.17, 2,071.67 and 838.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.17 : 2,071.67 = 838.15 : x
2. Step 2: Convert to fraction form
   1,501.17/2,071.67 = 838.15/x
3. Step 3: Cross multiply
   1,501.17x = 2,071.67 × 838.15
4. Step 4: Simplify right side
   1,501.17x = 1,736,370.21
5. Step 5: Solve for x
   x = 1,736,370.21/1,501.17
6. Step 6: Final answer
   x = 1,156.68