Finding the Fourth Proportional to 1,282.53, 1,770.05 and 1,072.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,282.53 : 1,770.05 = 1,072.34 : x
2. Step 2: Convert to fraction form
   1,282.53/1,770.05 = 1,072.34/x
3. Step 3: Cross multiply
   1,282.53x = 1,770.05 × 1,072.34
4. Step 4: Simplify right side
   1,282.53x = 1,898,095.89
5. Step 5: Solve for x
   x = 1,898,095.89/1,282.53
6. Step 6: Final answer
   x = 1,479.96