Finding the Fourth Proportional to 1,104.42, 1,653.48 and 907.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,104.42 : 1,653.48 = 907.50 : x
2. Step 2: Convert to fraction form
   1,104.42/1,653.48 = 907.50/x
3. Step 3: Cross multiply
   1,104.42x = 1,653.48 × 907.50
4. Step 4: Simplify right side
   1,104.42x = 1,500,533.10
5. Step 5: Solve for x
   x = 1,500,533.10/1,104.42
6. Step 6: Final answer
   x = 1,358.66