Finding the Fourth Proportional to 1,106.05, 1,526.35 and 608.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,106.05 : 1,526.35 = 608.72 : x
2. Step 2: Convert to fraction form
   1,106.05/1,526.35 = 608.72/x
3. Step 3: Cross multiply
   1,106.05x = 1,526.35 × 608.72
4. Step 4: Simplify right side
   1,106.05x = 929,118.06
5. Step 5: Solve for x
   x = 929,118.06/1,106.05
6. Step 6: Final answer
   x = 840.03