Finding the Fourth Proportional to 1,870.89, 2,565.63 and 1,776.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.89 : 2,565.63 = 1,776.12 : x
2. Step 2: Convert to fraction form
   1,870.89/2,565.63 = 1,776.12/x
3. Step 3: Cross multiply
   1,870.89x = 2,565.63 × 1,776.12
4. Step 4: Simplify right side
   1,870.89x = 4,556,866.76
5. Step 5: Solve for x
   x = 4,556,866.76/1,870.89
6. Step 6: Final answer
   x = 2,435.67