Finding the Fourth Proportional to 1,510.05, 2,263.86 and 1,388.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.05 : 2,263.86 = 1,388.55 : x
2. Step 2: Convert to fraction form
   1,510.05/2,263.86 = 1,388.55/x
3. Step 3: Cross multiply
   1,510.05x = 2,263.86 × 1,388.55
4. Step 4: Simplify right side
   1,510.05x = 3,143,482.80
5. Step 5: Solve for x
   x = 3,143,482.80/1,510.05
6. Step 6: Final answer
   x = 2,081.71