Finding the Fourth Proportional to 1,483.47, 2,225.34 and 838.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.47 : 2,225.34 = 838.35 : x
2. Step 2: Convert to fraction form
   1,483.47/2,225.34 = 838.35/x
3. Step 3: Cross multiply
   1,483.47x = 2,225.34 × 838.35
4. Step 4: Simplify right side
   1,483.47x = 1,865,613.79
5. Step 5: Solve for x
   x = 1,865,613.79/1,483.47
6. Step 6: Final answer
   x = 1,257.60