Finding the Fourth Proportional to 2,298.31, 3,447.60 and 999.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.31 : 3,447.60 = 999.88 : x
2. Step 2: Convert to fraction form
   2,298.31/3,447.60 = 999.88/x
3. Step 3: Cross multiply
   2,298.31x = 3,447.60 × 999.88
4. Step 4: Simplify right side
   2,298.31x = 3,447,186.29
5. Step 5: Solve for x
   x = 3,447,186.29/2,298.31
6. Step 6: Final answer
   x = 1,499.88