Finding the Fourth Proportional to 1,341.39, 1,848.90 and 899.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.39 : 1,848.90 = 899.13 : x
2. Step 2: Convert to fraction form
   1,341.39/1,848.90 = 899.13/x
3. Step 3: Cross multiply
   1,341.39x = 1,848.90 × 899.13
4. Step 4: Simplify right side
   1,341.39x = 1,662,401.46
5. Step 5: Solve for x
   x = 1,662,401.46/1,341.39
6. Step 6: Final answer
   x = 1,239.31