Finding the Fourth Proportional to 1,384.01, 1,909.03 and 985.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.01 : 1,909.03 = 985.62 : x
2. Step 2: Convert to fraction form
   1,384.01/1,909.03 = 985.62/x
3. Step 3: Cross multiply
   1,384.01x = 1,909.03 × 985.62
4. Step 4: Simplify right side
   1,384.01x = 1,881,578.15
5. Step 5: Solve for x
   x = 1,881,578.15/1,384.01
6. Step 6: Final answer
   x = 1,359.51