Finding the Fourth Proportional to 1,047.59, 1,445.57 and 627.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.59 : 1,445.57 = 627.93 : x
2. Step 2: Convert to fraction form
   1,047.59/1,445.57 = 627.93/x
3. Step 3: Cross multiply
   1,047.59x = 1,445.57 × 627.93
4. Step 4: Simplify right side
   1,047.59x = 907,716.77
5. Step 5: Solve for x
   x = 907,716.77/1,047.59
6. Step 6: Final answer
   x = 866.48