Finding the Fourth Proportional to 1,368.20, 1,887.46 and 994.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.20 : 1,887.46 = 994.60 : x
2. Step 2: Convert to fraction form
   1,368.20/1,887.46 = 994.60/x
3. Step 3: Cross multiply
   1,368.20x = 1,887.46 × 994.60
4. Step 4: Simplify right side
   1,368.20x = 1,877,267.72
5. Step 5: Solve for x
   x = 1,877,267.72/1,368.20
6. Step 6: Final answer
   x = 1,372.07