Finding the Fourth Proportional to 1,577.58, 2,176.50 and 947.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,577.58 : 2,176.50 = 947.62 : x
2. Step 2: Convert to fraction form
   1,577.58/2,176.50 = 947.62/x
3. Step 3: Cross multiply
   1,577.58x = 2,176.50 × 947.62
4. Step 4: Simplify right side
   1,577.58x = 2,062,499.33
5. Step 5: Solve for x
   x = 2,062,499.33/1,577.58
6. Step 6: Final answer
   x = 1,307.38