Finding the Fourth Proportional to 781,076, 1,077,885 and 423,380

Step by Step Solution

1. Step 1: Write the proportion equation
   781,076 : 1,077,885 = 423,380 : x
2. Step 2: Convert to fraction form
   781,076/1,077,885 = 423,380/x
3. Step 3: Cross multiply
   781,076x = 1,077,885 × 423,380
4. Step 4: Simplify right side
   781,076x = 456,354,951,300
5. Step 5: Solve for x
   x = 456,354,951,300/781,076
6. Step 6: Final answer
   x = 584,264.47