Finding the Fourth Proportional to 1,385.01, 1,910.41 and 986.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.01 : 1,910.41 = 986.62 : x
2. Step 2: Convert to fraction form
   1,385.01/1,910.41 = 986.62/x
3. Step 3: Cross multiply
   1,385.01x = 1,910.41 × 986.62
4. Step 4: Simplify right side
   1,385.01x = 1,884,848.71
5. Step 5: Solve for x
   x = 1,884,848.71/1,385.01
6. Step 6: Final answer
   x = 1,360.89