Finding the Fourth Proportional to 1,320.32, 1,823.54 and 899.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.32 : 1,823.54 = 899.94 : x
2. Step 2: Convert to fraction form
   1,320.32/1,823.54 = 899.94/x
3. Step 3: Cross multiply
   1,320.32x = 1,823.54 × 899.94
4. Step 4: Simplify right side
   1,320.32x = 1,641,076.59
5. Step 5: Solve for x
   x = 1,641,076.59/1,320.32
6. Step 6: Final answer
   x = 1,242.94