Finding the Fourth Proportional to 1,602.15, 2,390.69 and 1,269.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,602.15 : 2,390.69 = 1,269.31 : x
2. Step 2: Convert to fraction form
   1,602.15/2,390.69 = 1,269.31/x
3. Step 3: Cross multiply
   1,602.15x = 2,390.69 × 1,269.31
4. Step 4: Simplify right side
   1,602.15x = 3,034,526.72
5. Step 5: Solve for x
   x = 3,034,526.72/1,602.15
6. Step 6: Final answer
   x = 1,894.03