Finding the Fourth Proportional to 789,742.56, 1,184,612.88 and 257,262.72

Step by Step Solution

1. Step 1: Write the proportion equation
   789,742.56 : 1,184,612.88 = 257,262.72 : x
2. Step 2: Convert to fraction form
   789,742.56/1,184,612.88 = 257,262.72/x
3. Step 3: Cross multiply
   789,742.56x = 1,184,612.88 × 257,262.72
4. Step 4: Simplify right side
   789,742.56x = 304,756,731,655.83
5. Step 5: Solve for x
   x = 304,756,731,655.83/789,742.56
6. Step 6: Final answer
   x = 385,893.77