Finding the Fourth Proportional to 789,748.56, 1,184,621.88 and 257,268.72

Step by Step Solution

1. Step 1: Write the proportion equation
   789,748.56 : 1,184,621.88 = 257,268.72 : x
2. Step 2: Convert to fraction form
   789,748.56/1,184,621.88 = 257,268.72/x
3. Step 3: Cross multiply
   789,748.56x = 1,184,621.88 × 257,268.72
4. Step 4: Simplify right side
   789,748.56x = 304,766,154,751.59
5. Step 5: Solve for x
   x = 304,766,154,751.59/789,748.56
6. Step 6: Final answer
   x = 385,902.77