Finding the Fourth Proportional to 1,070.07, 1,476.71 and 627.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,070.07 : 1,476.71 = 627.98 : x
2. Step 2: Convert to fraction form
   1,070.07/1,476.71 = 627.98/x
3. Step 3: Cross multiply
   1,070.07x = 1,476.71 × 627.98
4. Step 4: Simplify right side
   1,070.07x = 927,333.82
5. Step 5: Solve for x
   x = 927,333.82/1,070.07
6. Step 6: Final answer
   x = 866.61