Finding the Fourth Proportional to 1,501.47, 2,071.76 and 838.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.47 : 2,071.76 = 838.31 : x
2. Step 2: Convert to fraction form
   1,501.47/2,071.76 = 838.31/x
3. Step 3: Cross multiply
   1,501.47x = 2,071.76 × 838.31
4. Step 4: Simplify right side
   1,501.47x = 1,736,762.58
5. Step 5: Solve for x
   x = 1,736,762.58/1,501.47
6. Step 6: Final answer
   x = 1,156.71