Finding the Fourth Proportional to 1,762.89, 2,432.91 and 977.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,762.89 : 2,432.91 = 977.05 : x
2. Step 2: Convert to fraction form
   1,762.89/2,432.91 = 977.05/x
3. Step 3: Cross multiply
   1,762.89x = 2,432.91 × 977.05
4. Step 4: Simplify right side
   1,762.89x = 2,377,074.72
5. Step 5: Solve for x
   x = 2,377,074.72/1,762.89
6. Step 6: Final answer
   x = 1,348.40