Finding the Fourth Proportional to 1,510.65, 2,084.71 and 881.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.65 : 2,084.71 = 881.55 : x
2. Step 2: Convert to fraction form
   1,510.65/2,084.71 = 881.55/x
3. Step 3: Cross multiply
   1,510.65x = 2,084.71 × 881.55
4. Step 4: Simplify right side
   1,510.65x = 1,837,776.10
5. Step 5: Solve for x
   x = 1,837,776.10/1,510.65
6. Step 6: Final answer
   x = 1,216.55