Finding the Fourth Proportional to 1,422.86, 1,963.70 and 1,377.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.86 : 1,963.70 = 1,377.50 : x
2. Step 2: Convert to fraction form
   1,422.86/1,963.70 = 1,377.50/x
3. Step 3: Cross multiply
   1,422.86x = 1,963.70 × 1,377.50
4. Step 4: Simplify right side
   1,422.86x = 2,704,996.75
5. Step 5: Solve for x
   x = 2,704,996.75/1,422.86
6. Step 6: Final answer
   x = 1,901.10