Finding the Fourth Proportional to 692,638.32, 1,039,061.38 and 243,280

Step by Step Solution

1. Step 1: Write the proportion equation
   692,638.32 : 1,039,061.38 = 243,280 : x
2. Step 2: Convert to fraction form
   692,638.32/1,039,061.38 = 243,280/x
3. Step 3: Cross multiply
   692,638.32x = 1,039,061.38 × 243,280
4. Step 4: Simplify right side
   692,638.32x = 252,782,852,526.40
5. Step 5: Solve for x
   x = 252,782,852,526.40/692,638.32
6. Step 6: Final answer
   x = 364,956.49