Finding the Fourth Proportional to 1,956.17, 2,699.61 and 1,210.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,956.17 : 2,699.61 = 1,210.52 : x
2. Step 2: Convert to fraction form
   1,956.17/2,699.61 = 1,210.52/x
3. Step 3: Cross multiply
   1,956.17x = 2,699.61 × 1,210.52
4. Step 4: Simplify right side
   1,956.17x = 3,267,931.90
5. Step 5: Solve for x
   x = 3,267,931.90/1,956.17
6. Step 6: Final answer
   x = 1,670.58