Finding the Fourth Proportional to 1,409.01, 1,942.43 and 988.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.01 : 1,942.43 = 988.08 : x
2. Step 2: Convert to fraction form
   1,409.01/1,942.43 = 988.08/x
3. Step 3: Cross multiply
   1,409.01x = 1,942.43 × 988.08
4. Step 4: Simplify right side
   1,409.01x = 1,919,271.29
5. Step 5: Solve for x
   x = 1,919,271.29/1,409.01
6. Step 6: Final answer
   x = 1,362.14