Finding the Fourth Proportional to 1,455.96, 2,181.82 and 899.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,455.96 : 2,181.82 = 899.48 : x
2. Step 2: Convert to fraction form
   1,455.96/2,181.82 = 899.48/x
3. Step 3: Cross multiply
   1,455.96x = 2,181.82 × 899.48
4. Step 4: Simplify right side
   1,455.96x = 1,962,503.45
5. Step 5: Solve for x
   x = 1,962,503.45/1,455.96
6. Step 6: Final answer
   x = 1,347.91