Finding the Fourth Proportional to 1,870.49, 2,803.07 and 1,478.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.49 : 2,803.07 = 1,478.76 : x
2. Step 2: Convert to fraction form
   1,870.49/2,803.07 = 1,478.76/x
3. Step 3: Cross multiply
   1,870.49x = 2,803.07 × 1,478.76
4. Step 4: Simplify right side
   1,870.49x = 4,145,060.40
5. Step 5: Solve for x
   x = 4,145,060.40/1,870.49
6. Step 6: Final answer
   x = 2,216.04