Finding the Fourth Proportional to 1,693.61, 2,338.16 and 1,292.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,693.61 : 2,338.16 = 1,292.12 : x
2. Step 2: Convert to fraction form
   1,693.61/2,338.16 = 1,292.12/x
3. Step 3: Cross multiply
   1,693.61x = 2,338.16 × 1,292.12
4. Step 4: Simplify right side
   1,693.61x = 3,021,165.15
5. Step 5: Solve for x
   x = 3,021,165.15/1,693.61
6. Step 6: Final answer
   x = 1,783.87