Finding the Fourth Proportional to 1,111.34, 1,533.62 and 607.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.34 : 1,533.62 = 607.18 : x
2. Step 2: Convert to fraction form
   1,111.34/1,533.62 = 607.18/x
3. Step 3: Cross multiply
   1,111.34x = 1,533.62 × 607.18
4. Step 4: Simplify right side
   1,111.34x = 931,172.69
5. Step 5: Solve for x
   x = 931,172.69/1,111.34
6. Step 6: Final answer
   x = 837.89