Finding the Fourth Proportional to 1,535.04, 2,117.72 and 1,069.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,535.04 : 2,117.72 = 1,069.56 : x
2. Step 2: Convert to fraction form
   1,535.04/2,117.72 = 1,069.56/x
3. Step 3: Cross multiply
   1,535.04x = 2,117.72 × 1,069.56
4. Step 4: Simplify right side
   1,535.04x = 2,265,028.60
5. Step 5: Solve for x
   x = 2,265,028.60/1,535.04
6. Step 6: Final answer
   x = 1,475.55