Finding the Fourth Proportional to 1,388.04, 2,081.61 and 463.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388.04 : 2,081.61 = 463.83 : x
2. Step 2: Convert to fraction form
   1,388.04/2,081.61 = 463.83/x
3. Step 3: Cross multiply
   1,388.04x = 2,081.61 × 463.83
4. Step 4: Simplify right side
   1,388.04x = 965,513.17
5. Step 5: Solve for x
   x = 965,513.17/1,388.04
6. Step 6: Final answer
   x = 695.59