Finding the Fourth Proportional to 648,776.00, 895,336.20 and 358,402.55

Step by Step Solution

1. Step 1: Write the proportion equation
   648,776.00 : 895,336.20 = 358,402.55 : x
2. Step 2: Convert to fraction form
   648,776.00/895,336.20 = 358,402.55/x
3. Step 3: Cross multiply
   648,776.00x = 895,336.20 × 358,402.55
4. Step 4: Simplify right side
   648,776.00x = 320,890,772,710.63
5. Step 5: Solve for x
   x = 320,890,772,710.63/648,776.00
6. Step 6: Final answer
   x = 494,609.50