Finding the Fourth Proportional to 1,570.08, 2,166.69 and 940.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570.08 : 2,166.69 = 940.63 : x
2. Step 2: Convert to fraction form
   1,570.08/2,166.69 = 940.63/x
3. Step 3: Cross multiply
   1,570.08x = 2,166.69 × 940.63
4. Step 4: Simplify right side
   1,570.08x = 2,038,053.61
5. Step 5: Solve for x
   x = 2,038,053.61/1,570.08
6. Step 6: Final answer
   x = 1,298.06