Finding the Fourth Proportional to 1,501.25, 2,071.80 and 838.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.25 : 2,071.80 = 838.10 : x
2. Step 2: Convert to fraction form
   1,501.25/2,071.80 = 838.10/x
3. Step 3: Cross multiply
   1,501.25x = 2,071.80 × 838.10
4. Step 4: Simplify right side
   1,501.25x = 1,736,380.76
5. Step 5: Solve for x
   x = 1,736,380.76/1,501.25
6. Step 6: Final answer
   x = 1,156.63