Finding the Fourth Proportional to 748,557.21, 1,123,280.50 and 275,574.72

Step by Step Solution

1. Step 1: Write the proportion equation
   748,557.21 : 1,123,280.50 = 275,574.72 : x
2. Step 2: Convert to fraction form
   748,557.21/1,123,280.50 = 275,574.72/x
3. Step 3: Cross multiply
   748,557.21x = 1,123,280.50 × 275,574.72
4. Step 4: Simplify right side
   748,557.21x = 309,547,709,268.96
5. Step 5: Solve for x
   x = 309,547,709,268.96/748,557.21
6. Step 6: Final answer
   x = 413,525.79