Finding the Fourth Proportional to 1,070.08, 1,477.98 and 930.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,070.08 : 1,477.98 = 930.15 : x
2. Step 2: Convert to fraction form
   1,070.08/1,477.98 = 930.15/x
3. Step 3: Cross multiply
   1,070.08x = 1,477.98 × 930.15
4. Step 4: Simplify right side
   1,070.08x = 1,374,743.10
5. Step 5: Solve for x
   x = 1,374,743.10/1,070.08
6. Step 6: Final answer
   x = 1,284.71