Finding the Fourth Proportional to 1,529.69, 2,112.18 and 998.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,529.69 : 2,112.18 = 998.93 : x
2. Step 2: Convert to fraction form
   1,529.69/2,112.18 = 998.93/x
3. Step 3: Cross multiply
   1,529.69x = 2,112.18 × 998.93
4. Step 4: Simplify right side
   1,529.69x = 2,109,921.50
5. Step 5: Solve for x
   x = 2,109,921.50/1,529.69
6. Step 6: Final answer
   x = 1,379.32