Finding the Fourth Proportional to 2,385.42, 3,579.12 and 999.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.42 : 3,579.12 = 999.06 : x
2. Step 2: Convert to fraction form
   2,385.42/3,579.12 = 999.06/x
3. Step 3: Cross multiply
   2,385.42x = 3,579.12 × 999.06
4. Step 4: Simplify right side
   2,385.42x = 3,575,755.63
5. Step 5: Solve for x
   x = 3,575,755.63/2,385.42
6. Step 6: Final answer
   x = 1,499.00