Finding the Fourth Proportional to 2,316.57, 3,196.88 and 1,372.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,316.57 : 3,196.88 = 1,372.31 : x
2. Step 2: Convert to fraction form
   2,316.57/3,196.88 = 1,372.31/x
3. Step 3: Cross multiply
   2,316.57x = 3,196.88 × 1,372.31
4. Step 4: Simplify right side
   2,316.57x = 4,387,110.39
5. Step 5: Solve for x
   x = 4,387,110.39/2,316.57
6. Step 6: Final answer
   x = 1,893.80