Finding the Fourth Proportional to 1,833.60, 2,530.37 and 994.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,833.60 : 2,530.37 = 994.31 : x
2. Step 2: Convert to fraction form
   1,833.60/2,530.37 = 994.31/x
3. Step 3: Cross multiply
   1,833.60x = 2,530.37 × 994.31
4. Step 4: Simplify right side
   1,833.60x = 2,515,962.03
5. Step 5: Solve for x
   x = 2,515,962.03/1,833.60
6. Step 6: Final answer
   x = 1,372.14