Finding the Fourth Proportional to 1,897.16, 2,617.78 and 1,069

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.16 : 2,617.78 = 1,069 : x
2. Step 2: Convert to fraction form
   1,897.16/2,617.78 = 1,069/x
3. Step 3: Cross multiply
   1,897.16x = 2,617.78 × 1,069
4. Step 4: Simplify right side
   1,897.16x = 2,798,406.82
5. Step 5: Solve for x
   x = 2,798,406.82/1,897.16
6. Step 6: Final answer
   x = 1,475.05