Finding the Fourth Proportional to 1,577.91, 2,177.31 and 948.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,577.91 : 2,177.31 = 948.34 : x
2. Step 2: Convert to fraction form
   1,577.91/2,177.31 = 948.34/x
3. Step 3: Cross multiply
   1,577.91x = 2,177.31 × 948.34
4. Step 4: Simplify right side
   1,577.91x = 2,064,830.17
5. Step 5: Solve for x
   x = 2,064,830.17/1,577.91
6. Step 6: Final answer
   x = 1,308.59