Finding the Fourth Proportional to 1,870.56, 2,803.68 and 1,777.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.56 : 2,803.68 = 1,777.68 : x
2. Step 2: Convert to fraction form
   1,870.56/2,803.68 = 1,777.68/x
3. Step 3: Cross multiply
   1,870.56x = 2,803.68 × 1,777.68
4. Step 4: Simplify right side
   1,870.56x = 4,984,045.86
5. Step 5: Solve for x
   x = 4,984,045.86/1,870.56
6. Step 6: Final answer
   x = 2,664.47