Finding the Fourth Proportional to 1,070.06, 1,477.06 and 628.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,070.06 : 1,477.06 = 628.10 : x
2. Step 2: Convert to fraction form
   1,070.06/1,477.06 = 628.10/x
3. Step 3: Cross multiply
   1,070.06x = 1,477.06 × 628.10
4. Step 4: Simplify right side
   1,070.06x = 927,741.39
5. Step 5: Solve for x
   x = 927,741.39/1,070.06
6. Step 6: Final answer
   x = 867.00