Finding the Fourth Proportional to 1,956.48, 2,699.04 and 1,210.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,956.48 : 2,699.04 = 1,210.72 : x
2. Step 2: Convert to fraction form
   1,956.48/2,699.04 = 1,210.72/x
3. Step 3: Cross multiply
   1,956.48x = 2,699.04 × 1,210.72
4. Step 4: Simplify right side
   1,956.48x = 3,267,781.71
5. Step 5: Solve for x
   x = 3,267,781.71/1,956.48
6. Step 6: Final answer
   x = 1,670.24