Finding the Fourth Proportional to 1,420.31, 1,961.27 and 1,373.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420.31 : 1,961.27 = 1,373.82 : x
2. Step 2: Convert to fraction form
   1,420.31/1,961.27 = 1,373.82/x
3. Step 3: Cross multiply
   1,420.31x = 1,961.27 × 1,373.82
4. Step 4: Simplify right side
   1,420.31x = 2,694,425.08
5. Step 5: Solve for x
   x = 2,694,425.08/1,420.31
6. Step 6: Final answer
   x = 1,897.07