Finding the Fourth Proportional to 1,341.60, 1,851.32 and 899.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.60 : 1,851.32 = 899.43 : x
2. Step 2: Convert to fraction form
   1,341.60/1,851.32 = 899.43/x
3. Step 3: Cross multiply
   1,341.60x = 1,851.32 × 899.43
4. Step 4: Simplify right side
   1,341.60x = 1,665,128.25
5. Step 5: Solve for x
   x = 1,665,128.25/1,341.60
6. Step 6: Final answer
   x = 1,241.15