Finding the Fourth Proportional to 1,061.04, 1,580.22 and 998.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.04 : 1,580.22 = 998.22 : x
2. Step 2: Convert to fraction form
   1,061.04/1,580.22 = 998.22/x
3. Step 3: Cross multiply
   1,061.04x = 1,580.22 × 998.22
4. Step 4: Simplify right side
   1,061.04x = 1,577,407.21
5. Step 5: Solve for x
   x = 1,577,407.21/1,061.04
6. Step 6: Final answer
   x = 1,486.66