Finding the Fourth Proportional to 1,429.82, 1,972.45 and 898.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.82 : 1,972.45 = 898.41 : x
2. Step 2: Convert to fraction form
   1,429.82/1,972.45 = 898.41/x
3. Step 3: Cross multiply
   1,429.82x = 1,972.45 × 898.41
4. Step 4: Simplify right side
   1,429.82x = 1,772,068.80
5. Step 5: Solve for x
   x = 1,772,068.80/1,429.82
6. Step 6: Final answer
   x = 1,239.36