Finding the Fourth Proportional to 1,776.58, 2,437.21 and 1,670.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.58 : 2,437.21 = 1,670.57 : x
2. Step 2: Convert to fraction form
   1,776.58/2,437.21 = 1,670.57/x
3. Step 3: Cross multiply
   1,776.58x = 2,437.21 × 1,670.57
4. Step 4: Simplify right side
   1,776.58x = 4,071,513.55
5. Step 5: Solve for x
   x = 4,071,513.55/1,776.58
6. Step 6: Final answer
   x = 2,291.77