Finding the Fourth Proportional to 1,785.42, 2,463.89 and 999.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,785.42 : 2,463.89 = 999.47 : x
2. Step 2: Convert to fraction form
   1,785.42/2,463.89 = 999.47/x
3. Step 3: Cross multiply
   1,785.42x = 2,463.89 × 999.47
4. Step 4: Simplify right side
   1,785.42x = 2,462,566.82
5. Step 5: Solve for x
   x = 2,462,566.82/1,785.42
6. Step 6: Final answer
   x = 1,379.26