Finding the Fourth Proportional to 1,379.16, 1,902.60 and 1,083.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.16 : 1,902.60 = 1,083.96 : x
2. Step 2: Convert to fraction form
   1,379.16/1,902.60 = 1,083.96/x
3. Step 3: Cross multiply
   1,379.16x = 1,902.60 × 1,083.96
4. Step 4: Simplify right side
   1,379.16x = 2,062,342.30
5. Step 5: Solve for x
   x = 2,062,342.30/1,379.16
6. Step 6: Final answer
   x = 1,495.36