Finding the Fourth Proportional to 1,342.70, 1,851.62 and 1,047.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.70 : 1,851.62 = 1,047.86 : x
2. Step 2: Convert to fraction form
   1,342.70/1,851.62 = 1,047.86/x
3. Step 3: Cross multiply
   1,342.70x = 1,851.62 × 1,047.86
4. Step 4: Simplify right side
   1,342.70x = 1,940,238.53
5. Step 5: Solve for x
   x = 1,940,238.53/1,342.70
6. Step 6: Final answer
   x = 1,445.03