Finding the Fourth Proportional to 1,500.42, 2,069.60 and 911.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.42 : 2,069.60 = 911.30 : x
2. Step 2: Convert to fraction form
   1,500.42/2,069.60 = 911.30/x
3. Step 3: Cross multiply
   1,500.42x = 2,069.60 × 911.30
4. Step 4: Simplify right side
   1,500.42x = 1,886,028.34
5. Step 5: Solve for x
   x = 1,886,028.34/1,500.42
6. Step 6: Final answer
   x = 1,257.00