Finding the Fourth Proportional to 1,407.93, 2,111.76 and 627.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.93 : 2,111.76 = 627.96 : x
2. Step 2: Convert to fraction form
   1,407.93/2,111.76 = 627.96/x
3. Step 3: Cross multiply
   1,407.93x = 2,111.76 × 627.96
4. Step 4: Simplify right side
   1,407.93x = 1,326,100.81
5. Step 5: Solve for x
   x = 1,326,100.81/1,407.93
6. Step 6: Final answer
   x = 941.88