Finding the Fourth Proportional to 1,380.60, 1,893.51 and 1,310.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380.60 : 1,893.51 = 1,310.22 : x
2. Step 2: Convert to fraction form
   1,380.60/1,893.51 = 1,310.22/x
3. Step 3: Cross multiply
   1,380.60x = 1,893.51 × 1,310.22
4. Step 4: Simplify right side
   1,380.60x = 2,480,914.67
5. Step 5: Solve for x
   x = 2,480,914.67/1,380.60
6. Step 6: Final answer
   x = 1,796.98